Triangle Third Angles Theorem

Triangle Third Angles Theorem Exploration

Question 1: Find the measure of angle A and angle G using the angle measuring tool .

This is the measuring angle tool[icon]/images/ggb/toolbar/mode_angle.png[/icon]. Are angles A and angles G congruent?

Yes No

Question 2:

What theorem states that angles A and G must be congruent?

Question 3:

What theorem can be used to help prove the third angles theorem?

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Information: Triangle Third Angles Theorem