Two parallel lines cut by a transversal-Angle relationships

Author:Ben Huhner

What do you notice about the angles in the figure below? Click and drag points A and D to move parts of the picture around. What changes? What stays the same?

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Interactive Unit Circle - Exact Trig Values
Set Operations (2 Sets)
Addition of Vectors Algeraically
Dilation + Rotation of Pentagons
အခြေခံ data အခေါ်အဝေါ်များ

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this is a median
Square 2
ಮೂಲ ಸಮಾನುಪಾತತೆ ಪ್ರಮೇಯ
maria,project
Dissection Proof set up

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Inequalities
Special Points
Rotation
Logarithm
Subtraction