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3 years ago

Can someone tell me how to do this

Mathematics

2 answers:

katrin [286]3 years ago

8 0

Answer:

A. Must Be

Step-by-step explanation:

There are 360 degrees in quadrilaterals which have been subcategorized to a parallelogram here.

We can add up the figures known:

95 + 95 + 85 + x

x stands for the unknown angle for now

the sum of the figures is 275 degrees + x

We know the sum of the angles should be 360

360 - 275 = x

x = 85.

You should be able to do this with every parallelogram.

ASHA 777 [7]3 years ago

4 0

Answer:

must not be

Step-by-step explanation:

The whole thing equals 360 degrees

Angle B and Angle D are equal; which equals 190 degrees.

Add Angle A to 190 degrees; which is 86 + 190 = 276.

Subtract 360, which is what the whole thing equals, and 276, which is the known angle added together, and you get 56.

In order for this to be a parallelogram, the opposite angles need to be equal.

Since they are not, the answer is must not be.

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~lenvy~

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