Answers

  • Brainly User
2016-02-19T06:43:08+08:00
Opposite angles of a parallelogram are congruent.  There are four angles in a parallelogram whose sum of measures is 180°.

1x + 1x + 2x + 2x = 180

6x = 180

6x/6 = 180/6

x = 30

The two consecutive angles are: (substitute 30 for x)
1x = 30°
2x = 2(30) = 60°

ANSWER:  Ratio 1:2 = 30° : 60°
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