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Rule 9: Alternate Angles on parallel lines
Author:
Anton Coltham
Topic:
Angles
GeoGebra
New Resources
Sine and Cosine on the Unit Circle
Which Quadrilateral is Which?
Transforming Random Variables
Tangent Vector (2)
Combining Random Variables
Discover Resources
Theorem 12-9: Inscribed Angle Theorem
implicit_intersections
Vertical Pairs
parametric
angle bisector
Edward Knote
Discover Topics
Parallelogram
Upper and Lower Sum or Riemann Sum
Rectangle
Rhombus
Similar Triangles