Understanding and using angles created when parallel lines are cut by a transversal

Alternate angles are...

• on the same side of the transversal.

• on opposite sides of the transversal.

• not sharing a side with the transversal.

• are not on the same plane as the transversal.

Same Side Interior Angles...

• Are congruent

• Add up to 180

• Are equal

• Have no relationship

• Add up to 90

Solve for x and determine which angle relationship you used when solving. Then determine the measurement of the angle in bold.

• x = 4; same-side interior angles ; Bold Angle = 65

• x = 4; alternate interior angles ; Bold Angle = 65

• x = 4 ; same-side interior angles ; Bold Angle = 115

Name a pair of same side angles:

• 1 & 5

• 2 & 4

• 8 & 3

• 7 & 4

Same Side Interior angles...

• Add to be 180

• Are congruent

• Add to be 90

• Are equal

Angle 3 and angle 4 are

• vertical
• corresponding
• supplementary
• complimentary

In the diagram, which other alternate interior angle is equal to  $\angle$  AGH?

•  $\angle$  BGH
  

•  $\angle$  CHG

•  $\angle$  DHG

•  $\angle$  DHF

What is the relationship between  $\angle$ 3 &  $\angle$ 4?

• Supplementary

• Complementary

• Vertical

In this figure, parallel lines a and b are intersected by line c. Which pair of angles are not supplementary?

What type of angle pair are 1 and 8?

• Alt. Int. Angles

• Alt. Ext. Angles

• Same Side Ext. Angles

• Linear Pair