3 years ago

Use the information in the figure to find m < D

1 answer:

8 0

The measure of angle D is 39 degrees.

Since it’s an isosceles triangle, the two unmarked angles are equal. Since you know there are 180° in a triangle, subtract 102° from 180° to get 78°. Then, cut that in half since you need to divide it equally among the two remaining angles.

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