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Proof that the opposite angles in a cyclic quadrilateral sum to 180°
Author:
Ben Rooney
Topic:
Angles
GeoGebra
New Resources
Ellipse as Envelope - Correspondence Method
Ellipse, Hyperbola and Circle as Envelopes
Cross Product in 2D and 3D
Construct a Square
van Aubel's Theorem
Discover Resources
Parametric Equations Sketch
GM1b-02-P1-Q1 Circle Terms
f(x-h)+k Transformation of Piecewise Function
triangle stuff
Копія Euclid Book 1 Proposition 4
Discover Topics
Equilateral Triangles
Isosceles Triangles
Reflection
Inequalities
Geometric Distribution