Parallelogram Mod

Parallelogram Mod

The goal is to find the missing angles of a parallelogram.

Example

The following slides will show how to find the missing angles.

Alternate Interior Angles

Alternate interior angles are congruent. They are "crisscross" from each other. (15 to 15) and (50 to 50).

Multiple Choice

Alternate Interior Angles are ?????

• Supplementary

• Complementary

• Congruent

• Obtuse

Supplementary Angles

Angles that make a linear pair add to make 180 degrees (linear pair).

Vertical Angles

Angles that are "across" from each other are congruent.

Multiple Choice

Vertical Angles are ????

• Supplementary

• Complementary

• Congruent

• Obtuse

Third Angle of a Triangle

Three angles of a triangle add to make 180 degrees. You can find the third angle by subtracting the other two.

More Alternate Interior Angles

The other corner has two pairs of alternate interior angles as well.

Get ready for some practice questions!

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