Question

Which types of triangles can have three angles that measure less than 90°?
acute triangle
equilateral triangle
a right triangle
isosceles triangle

Answer 1

Answer:

acute angle

Step-by-step explanation:

acute = angles that are less than 90⁰

Answer 2

The triangles which have three angles that measure less than 90° are:

acute triangle, equilateral triangle

What is acute triangle?

"An acute triangle is a triangle with three acute angles that means each angle measures less than 90°."

What is an equilateral triangle?

"An equilateral triangle is a triangle where all sides and angles are equal. Each angle of an equilateral triangle measures 60°. "

What is a right triangle?

"A right triangle is a triangle where one of the angle measures 90°. "

What is an isosceles triangle?

"A triangle that has two sides of equal length is called as an isosceles triangle. Also, two angles that are opposite to equal sides are always equal and measures less than 90°. "

For given question,

As one of the angle of right triangle measures 90°, it is not a required triangle.

Also, for isosceles triangle, although two equal angles measure less than 90°, the third angle can be 90°. So, an isosceles triangle is not a required triangle.

Therefore, the triangles that have three angles that measure less than 90° are:

1) acute triangle

2) equilateral triangle

Learn more about triangles here:

https://brainly.com/question/1311149

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