Question

On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 70°.

Which statements about this triangle are true?

Select all correct answers.


All sides have different lengths.

It is an acute triangle.

It is an obtuse triangle.

The third angle measures 110°.

The third angle measures 70°.

Two sides have the same length.

Answer 1

It is an acute triangle , two sides have the same length

Answer 2

It is an acute triangle.

Two sides have the same length.

The third angle measures 70°.

Explanation:

It is an acute triangle because all triangles are less than 90°.

Two sides have the same length because since we know that two angles, which would be the base angles are the same, then triangle must be isosceles.

180°-(40°+70°)= 110°