ciara180 ciara180

30-07-2018
Mathematics

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ABCD is a parallelogram. If angle B is equal to (2x)° and angle A is equal to (-x + 120)°, find x.

ABCD is a parallelogram If angle B is equal to 2x and angle A is equal to x 120 find x class=

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PunIntended PunIntended

31-07-2018

In parallelograms, the two adjacent angles always add up to 180. So, that means that angle A + angle B = 180:

2x + (-x + 120) = 180

Solve for x:

x = 60

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