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Corresponding Angles Postulate

Author:Richard Dean
Topic:Angles

Look at and . What type of angles are they?

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Check my answer (3)

Look at and . We determined that the sum of these angles would be . Move around the points on the applet. Is that always, sometimes, or never true?

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  • B
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Check my answer (3)

Look at and . What type of angles are they?

Select all that apply
  • A
  • B
  • C
  • D
  • E
  • F
Check my answer (3)

Look at and . We determined that these type of angles would be equal. Move around the points on the applet. Is that always, sometimes, or never true?

Select all that apply
  • A
  • B
  • C
Check my answer (3)
Measure a pair of Corresponding Angles using the Toolbar Image tool. Then move around the points using the Toolbar Image tool.

Is there anything that jumps out to you that seems to be special about corresponding angles?

Using the Toolbar Image tool. Force the Corresponding Angles to be congruent.

Can you force them to be congruent? Would you say that Corresponding Angles are congruent:

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  • B
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Check my answer (3)

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. "If you have two corresponding angles..... then..... "

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