CC3 Section 9.1

Formed when two lines intersect, known as "opposite angles"; congruent

• Same Side Interior Angles

• Vertical Angles

• Perpendicular Lines

• Parallel Lines

What type of angles are labeled in the picture?

• Same Side Exterior

• Corresponding

• Complementary

• Alternate Interior Angles

Which angle pair is shown in the picture?

• Corresponding

• Alternate Interior Angles

• Alternate Exterior Angles

• Same Side Interior Angels

Which of these angles is NOT congruent to angle 5?

• Angle 6
• Angle 8
• Angle 1
• Angle 4

Name the angle relationship.

• Alternate Interior
• Alternate Exterior
• Corresponding
• Vertical Angles

Name the angle relationship.

• Alternate Interior
• Alternate Exterior
• Corresponding
• Vertical Angles

Name the angle relationship.

• Alternate Exteriors
• Alternate Interiors
• Corresponding
• Same Side Interior

• ∠L=51°
• ∠L=129°
• ∠L=180°
• ∠L=39°

Find the measure of the indicated angle. 

• 95
• 85
• 35
• 45

What is the measure of the missing angle?

• 140
• 130
• 50
• 90