Question

Given the lines a and b are parallel and that m<8=180, find

Answer 1

Answer:

• D) 72°

Step-by-step explanation:

Sum of angles 7 and 8 is 180° as they are supplementary

Angles 7 and 3 are corresponding angles and they measure same as per property of corresponding angles, therefore:

• m∠3 = m∠7
• m∠7 = 180° - m∠8 = 180° - 108° = 72°
• So m∠3 = 72°

Option D is correct