Question

In parallogram ABCD angle A - angle B= 40. find the measure of angle A.​

Answer 1

Answer:

angle A+angle B=180⁰

40⁰+ang.A=180⁰

ang.A=180⁰-40⁰

ang.A=140⁰ .ans.

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Answer 2

In parallelogram we know sum of adjacent angle =180°

so this means angle A+angle B=180{equation 2}

Given= angle A - angle B=40°{equation 2}

Adding both equation 1 and 2

(A+B)+(A - B) = 40+180

A+A+B-B=220

2A=220

A=110

So Angle A =110°