3 years ago

If ABCD Is a parallelogram, then what is the m

Mathematics

1 answer:

Degger [83]3 years ago

6 0

Step-by-step explanation:

the given shape is a parallelogram so, adjacent angles are supplementary.

so,

=》3y - 15° + 2y = 180°

=》5y = 180° + 15°

=》y = 195° ÷ 5

=》y = 39°

now , Angle A = Angle C

( they are opposite angles of a parallelogram )

=》Angle A

=》 2 × y

=》2 × 39°

=》78°

hence, Angle A = 78°

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