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Triangle Sum
Author:
Bruce Bauer
This drawing can help see Alternate Interior Angles for the Triangle Sum Theorem.
GeoGebra
New Resources
Art and Rotational Symmetry
Road Runner (beep, beep)
Exploring the Derivative of an Exponential Function
探究由平行線和截線所成的角
alg2_05_05_01_applet_exp_2_flvs
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dynagraphs
Symmetric propeller
example.TRIG.COMP.3.0
parallel lines
Snefnug
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Trapezoid
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Histogram
Stochastic Process or Random Process