Triangles (Classifying and Finding Missing Angle)

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What is a right triangle?

Back

A triangle that has one angle equal to 90 degrees.

Front

What is an equilateral triangle?

Back

A triangle where all three sides are equal in length and all angles are equal to 60 degrees.

Front

What is a scalene triangle?

Back

A triangle where all three sides are of different lengths and all angles are different.

Front

What is an isosceles triangle?

Back

A triangle that has at least two sides of equal length and at least two equal angles.

Front

How do you classify triangles based on angles?

Back

Triangles can be classified as acute, obtuse, or right based on their angles.

Front

How do you classify triangles based on sides?

Back

Triangles can be classified as scalene, isosceles, or equilateral based on the lengths of their sides.

Front

What is the sum of the angles in any triangle?

Back

The sum of the interior angles in any triangle is always 180 degrees.

Front

If one angle of a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.