Angle and Line Relationships

Angle Q and B are...

• Alternate Interior Angles
• Same Side Interior Angles
• Corresponding Angles
• Alternate Exterior Angles

Angle C and P are...

• Alternate Interior Angles
• Same-Side Interior Angles
• Corresponding Angles
• Alternate Exterior Angles

Angle R and C are...

• Alternate Interior Angles
• Same-Side Interior Angles
• Corresponding Angles
• Alternate Exterior Angles

Angle A and C are...

• Supplementary
• Congruent

Angles which add up to 180° are called _____.

• Vertical angles
• Corresponding Angles
• Supplementary Angles
• Alternate Interior Angles

Angles inside a pair of lines on the opposite sides of a transversal and are congruent are called _____.

• Vertical angles
• Corresponding Angles
• Supplementary Angles
• Alternate Interior Angles

If a transversal intersects two parallel lines, then corresponding angles are congruent.

• Corresponding Angles Theorem
• 2 intersecting lines form lin. Pair of  ≅ ∠ ‘s → lines ⊥
• Converse of the Corresponding Angles Theorem
• Parallel Postulate

If a transversal intersects two parallel lines, then same-side intereior angles are supplementary.

• Corresponding Angles Theorem
• Parallel Postulate
• Converse of the Same-side Interior Angles Postulate
• Same-side Interior Angles Postulate

If  m∠5 = 110°, find the measure of ∠8. 

• 110°
• 55°
• 75°
• 70°

If  m∠7 = 60°, find the measure of ∠4. 

• 65°
• 110°
• 60°
• 75°