On a piece of paper, use a protractor to construct a triangle with angle measures of 30° and 120°. Which statements about this triangle are true? Select all correct answers. The third angle measures 30°. Two sides have the same length. The third angle measures 75°. The third angle measures 90°. All sides have different lengths.

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Answer:

A. The third angle measures 30*

B. Two sides have the same length

The statement first “The third angle measures 30°” and statement second “Two sides have the same length.” are correct.

What is the triangle?

The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.

We have:

Triangle with angle measures of 30° and 120°

Third angle measure = 180–30 – 120 = 30 degree

Two angles measures are same, and two sides have the same length.

Thus, the statement first “The third angle measures 30°” and statement second “Two sides have the same length.” are correct.

Learn more about the triangle here:

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