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YT 28 minutes 54 seconds
Insights into Mathematics
The group of blue planar isometries | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 21 minutes 22 seconds
Insights into Mathematics
Half-slope and the full group of Euclidean isometries | WildTrig: Intro to Rational Trigonometry
YT 24 minutes 29 seconds
Insights into Mathematics
The geometry of Euclidean reflections and rotations (grounded!) | WildTrig
YT 20 minutes 54 seconds
Insights into Mathematics
The Euclidean rotation group and complex number multiplication | WildTrig
YT 26 minutes 10 seconds
Insights into Mathematics
Isometry groups in planar geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 31 minutes 33 seconds
Insights into Mathematics
Turn angles, continued fractions and approximate geometry | WildTrig: Intro to Rational Trigonometry
YT 28 minutes 30 seconds
Insights into Mathematics
Understanding uniform motion: are radians really necessary? | WildTrig
YT 24 minutes 25 seconds
Insights into Mathematics
The true role of the circular functions | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 22 minutes
Insights into Mathematics
Rational trigonometry and mathematics education (IV) | WildTrig: Intro to Rational Trigonometry
YT 30 minutes 54 seconds
Insights into Mathematics
Maths Education and Rational Trigonometry (III) | WildTrig: Intro to Rational Trigonometry
YT 23 minutes 19 seconds
Insights into Mathematics
Maths Education and Rational Trigonometry (II) | WildTrig: Intro to Rational Trigonometry
YT 28 minutes 7 seconds
Insights into Mathematics
Rheticus and 17th century trig tables | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 27 minutes 58 seconds
Insights into Mathematics
Maths education and rational trigonometry (I) | WildTrig: Intro to Rational Trigonometry
YT 30 minutes 12 seconds
Insights into Mathematics
The general rational laws of trigonometry | WildTrig: Intro to Rational Trigonometry
YT 23 minutes 27 seconds
Insights into Mathematics
Geometry with a general dot product | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 26 minutes 56 seconds
Insights into Mathematics
Coloured spreads and generalizations (II) | WildTrig: Intro to Rational Trigonometry
YT 28 minutes 52 seconds
Insights into Mathematics
Coloured spreads and generalizations (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 19 minutes 54 seconds
Insights into Mathematics
Spreads, determinants and chromogeometry (III) | WildTrig: Intro to Rational Trigonometry
YT 20 minutes 26 seconds
Insights into Mathematics
Spreads, determinants and chromogeometry (II) | WildTrig: Intro to Rational Trigonometry
YT 19 minutes 26 seconds
Insights into Mathematics
Spreads, determinants and chromogeometry (I) | WildTrig: Intro to Rational Trigonometry
YT 19 minutes 23 seconds
Insights into Mathematics
Determinants in Geometry (III) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 2 seconds
Insights into Mathematics
Determinants in geometry (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 5 seconds
Insights into Mathematics
Determinants in geometry (II) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 56 seconds
Insights into Mathematics
What is geometry really about? | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 56 seconds
Insights into Mathematics
Euler's Four Point Relation | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 41 seconds
Insights into Mathematics
Trisecting a right triangle | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 39 seconds
Insights into Mathematics
Squares in a pentagon | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 36 seconds
Insights into Mathematics
Barycentric coordinates and the 6-7-8 triangle | WildTrig: Intro to Rational Trigonometry
YT 8 minutes 11 seconds
Insights into Mathematics
The 6-7-8 triangle | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 35 seconds
Insights into Mathematics
Hints for solutions to Quiz (#2) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 5 minutes 46 seconds
Insights into Mathematics
Rational trigonometry Quiz (#2) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 3 seconds
Insights into Mathematics
Proofs of the Triangle spread rules | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 43 seconds
Insights into Mathematics
The problem with `functions' | Arithmetic and Geometry Math Foundations 42a
YT 9 minutes 17 seconds
Insights into Mathematics
Acute and obtuse triangles | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 58 seconds
Insights into Mathematics
Triangle spread rules in action | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 49 seconds
Insights into Mathematics
Triangle spread rules | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 58 seconds
Insights into Mathematics
Proofs in chromogeometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 7 minutes 54 seconds
Insights into Mathematics
Chromogeometry and nine-point circles | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 7 minutes 37 seconds
Insights into Mathematics
Chromogeometry and the Omega triangle | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 41 seconds
Insights into Mathematics
An introduction to chromogeometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 19 seconds
Insights into Mathematics
Chromogeometry and Euler lines | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 37 seconds
Insights into Mathematics
Pythagorean triples | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 51 seconds
Insights into Mathematics
Green geometry (II) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 47 seconds
Insights into Mathematics
Green geometry (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 45 seconds
Insights into Mathematics
Circles in red geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 35 seconds
Insights into Mathematics
Red geometry (III) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes
Insights into Mathematics
Red geometry (II) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 3 seconds
Insights into Mathematics
Red geometry (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 50 seconds
Insights into Mathematics
Einstein's special relativity: an introduction | WildTrig: Intro to Rational Trigonometry
YT 9 minutes 1 second
Insights into Mathematics
An algebraic framework for rational trigonometry (I) | WildTrig: Intro to Rational Trigonometry
YT 10 minutes 3 seconds
Insights into Mathematics
An algebraic framework for rational trigonometry (II) | WildTrig: Intro to Rational Trigonometry
YT 6 minutes 34 seconds
Insights into Mathematics
How to learn mathematics | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 46 seconds
Insights into Mathematics
Conics via projective geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 22 seconds
Insights into Mathematics
Harmonic ranges and pencils | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 17 seconds
Insights into Mathematics
The fundamental theorem of projective geometry | WildTrig: Intro to Rational Trigonometry
YT 10 minutes 5 seconds
Insights into Mathematics
Affine geometry and vectors | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 47 seconds
Insights into Mathematics
More about the cross ratio | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 11 seconds
Insights into Mathematics
The cross ratio | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 10 seconds
Insights into Mathematics
Affine geometry and barycentric coordinates | WildTrig: Intro to Rational Trigonometry
YT 8 minutes 19 seconds
Insights into Mathematics
Lines and planes in projective geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 7 minutes 57 seconds
Insights into Mathematics
Projective geometry and homogeneous coordinates | WildTrig: Intro to Rational Trigonometry
YT 9 minutes 51 seconds
Insights into Mathematics
Projective geometry and perspective | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 7 minutes 22 seconds
Insights into Mathematics
Introduction to Projective Geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 57 seconds
Insights into Mathematics
Polar coordinates and rational trigonometry | WildTrig: Intro to Rational Trigonometry
YT 8 minutes 10 seconds
Insights into Mathematics
Trisecting angles and Hadley's theorem | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 7 seconds
Insights into Mathematics
What size ladder fits around a corner? | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 5 seconds
Insights into Mathematics
Stewart's theorem | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 35 seconds
Insights into Mathematics
Applications of rational trig to surveying (II) | WildTrig: Intro to Rational Trigonometry
YT 9 minutes 58 seconds
Insights into Mathematics
Pentagons and five-fold symmetry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 9 seconds
Insights into Mathematics
Spread polynomials | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 8 minutes 12 seconds
Insights into Mathematics
Highlights from triangle geometry (II) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 36 seconds
Insights into Mathematics
Highlights from triangle geometry (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes
Insights into Mathematics
Trigonometry with Finite Fields (III) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 2 seconds
Insights into Mathematics
Trigonometry with Finite Fields (II) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 1 second
Insights into Mathematics
Trigonometry with finite fields (I) | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 34 seconds
Insights into Mathematics
Medians, altitudes and vertex bisectors | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 1 second
Insights into Mathematics
Rational trigonometry: Solutions to Quiz (1) WildTrig: Intro to Rational Trigonometry
YT 8 minutes 38 seconds
Insights into Mathematics
An Invitation to Geometry | WildTrig: Intro to Rational Trigonometry 0 | N J Wildberger
YT 7 minutes 19 seconds
Insights into Mathematics
Rational Trigonometry Quiz 1 | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 10 minutes 19 seconds
Insights into Mathematics
Complex numbers and rotations | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 46 seconds
Insights into Mathematics
Rational parameters for circles | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 5 seconds
Insights into Mathematics
Why spreads are better than angles | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 20 seconds
Insights into Mathematics
Cartesian coordinates and geometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 52 seconds
Insights into Mathematics
Applications of rational trig to surveying (I) | WildTrig | N J Wildberger
YT 8 minutes 37 seconds
Insights into Mathematics
Geometry of Circles with Rational Trigonometry | WildTrig: Intro to Rational Trigonometry
YT 8 minutes 40 seconds
Insights into Mathematics
Laws of Proportion for a Triangle | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 56 seconds
Insights into Mathematics
Centers of Triangles with Rational Trigonometry | WildTrig: Intro to Rational Trigonometry
YT 6 minutes 33 seconds
Insights into Mathematics
Solving Triangles with Rational Trigonometry | WildTrig: Intro to Rational Trigonometry
YT 8 minutes 37 seconds
Insights into Mathematics
Heron's Formula Viewed Rationally | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 31 seconds
Insights into Mathematics
Applications of Rational Trigonometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 49 seconds
Insights into Mathematics
Five Main Laws of Rational Trigonometry | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 21 seconds
Insights into Mathematics
Spread, Angles and Astronomy | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 59 seconds
Insights into Mathematics
Quadrance via Pythagoras and Archimedes | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 9 minutes 48 seconds
Insights into Mathematics
Why Trig is Hard | WildTrig: Intro to Rational Trigonometry | N J Wildberger
YT 1 second

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