Question

Calculate the measure of each lettered angle in the following figure (parallel lines,segment or rays are denoted by thick matching rows) ​

Answer 1

Answer:

Here,

c=72°[alternate interior angles are equal]

→b+c+55°=180(linear pair is equal to 180)

→b+72+55=180

→b+127=180

→b=53°

→a+b+c=180(sum angle property is 180)

→a+53+72=180

→a+125=180

→a=55°

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