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GeoGebra
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GeoGebra Protractor Tool
Author:
Linda Bollman
,
Terry Lee Lindenmuth
Drag points B and C and observe the measure of the angle.
GeoGebra
Show an acute angle, an obtuse angle, a right angle, and finally a straight angle.
New Resources
探究由平行線和截線所成的角
Road Runner (beep, beep)
Art and Rotational Symmetry
alg2_05_05_01_applet_exp_flvs
alg2_05_05_01_applet_exp_2_flvs
Discover Resources
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Proyecto final
Pac-Man
EquilateralTriangle
Quadrilaterals - Square Pretenders
Discover Topics
Function Graph
Kite
Functions
Equations
Ellipse