Lines m and n are parallel, as shown in the diagram below. What are the measures of angles A and B?
2 answers:
Answer:
a = 55° and b = 60°
Step-by-step explanation:
→ Remember 2 key points about angles
Angles in a triangle add up to 180° Alternate angles are equal → Angle a is alternate to 55° so using the 2nd point,
a = 55°
→ Remember the fact that angle in a triangle add up to 180°
55° + 65° + b = 180°
→ Collect the whole numbers
120° + b = 180°
→ Minus 120° from both sides to isolate b
b = 60°
Step-by-step explanation:
since m and n are parallel so the right side of b are equal 65degree. 180-55-65 to get B is 60 degree. After that, 180-60-65 will get the A is 55degree
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Step-by-step explanation:
