Corresponding Angles Postulate

Look at [math]\gamma[/math] and [math]\delta[/math]. What type of angles are they?
Look at [math]\gamma[/math] and [math]\delta[/math]. We determined that the sum of these angles would be [math]180^\circ[/math]. Move around the points on the applet. Is that always, sometimes, or never true?
Look at [math]\alpha[/math] and [math]\beta[/math]. What type of angles are they?
Look at [math]\alpha[/math] and [math]\beta[/math]. We determined that these type of angles would be equal. Move around the points on the applet. Is that always, sometimes, or never true?
Measure a pair of Corresponding Angles using the [icon]/images/ggb/toolbar/mode_angle.png[/icon] tool. Then move around the points using the [icon]/images/ggb/toolbar/mode_move.png[/icon] tool.
Is there anything that jumps out to you that seems to be special about corresponding angles?
Using the [icon]/images/ggb/toolbar/mode_move.png[/icon] tool. Force the Corresponding Angles to be congruent.
Can you force them to be congruent? Would you say that Corresponding Angles are congruent:
Can you force them to be congruent? What does it seem needs to happen in order to make them congruent?
Testing a Theory
Test our Theory? Construct another line. Find and measure the corresponding angles.
We now have what is needed for a postulate. Write as an "if then" statement what we know about corresponding angles. [br][br]"If you have two corresponding angles..... then..... "
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Información: Corresponding Angles Postulate