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On a piece of paper, use a protractor to construct a triangle with angle measures of 30° and 40°.

Select from the drop-down menu to correctly classify the triangle.

A triangle with angle measures of 30° and 40° is

Acute
obtuse
right

2 Answers

4 votes
An angle smaller than 90° is gonna be a acute so your answer is gonna be acute
User Clayton Selby
by
3.3k points
10 votes

Explanation:

The answer is b. an obtuse. This is because if it were a right-angled triangle, then 90 + 30 + 40 would equal 180 and it doesn't. It's obtuse because 30 + 40 = 70, and triangles have to add up to 180° so the last angle would need to be 110°, which is an obtuse angle. I hope this helps!

User Octavio Garbarino
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3.2k points