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hodyreva [135]
3 years ago
12

In parallelogram ABCD, m Find m

Mathematics
1 answer:
Nuetrik [128]3 years ago
6 0

Answer:

The angle C measures 120 degrees.

Step-by-step explanation:

For a polygon of n sides, the sum of internal angles, in degrees is given by:

S = (n-2) \times 180

Parallelogram

4 sides, so

S = (4-2)*180 = 360

Two pairs of equal angles

B and D measure 60

A and C measure x. So

2x + 2*60 = 360

2x = 240

x = \frac{240}{2}

x = 120

The angle C measures 120 degrees.

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