Homework #3 Parallel Lines, Transversals and Triangles

Which of these angles is NOT congruent to angle 5?

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

Solve for angle 5

• 65
• 60
• 110
• 115

Line l and m are cut by transversal n.  Which statement proves that line l is parallel to line m?

• ∠2 ≅ ∠3
• ∠2 ≅ ∠6 
• m∠7 + m∠8 = 180°
• m∠3 + m∠5 = 90°

Find D

• ∠D=116°
• ∠D=64°
• ∠D=180°
• ∠D=26°

How many degrees is X?

• 65

• 70

• 90

• 55

How many degrees is X?

• 37

• 47

• 7

• 90

How much is the value of X?

• 45

• 60

• 90

• 15

What is the measure of angle CBA?

• 20

• 70

• 180

• 30

Answer explanation

150 - 120 = 30

because the sum of the 2 opposite interior angles eqauls the measure of the exterior angle