Missing Angles in Triangles / Naming Triangles

Front

How many obtuse angles are in an obtuse triangle?

Back

1

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

Classify this triangle by its sides and angles: A triangle with one angle greater than 90 degrees and all sides of different lengths.

Back

obtuse scalene

Front

Classify the triangle by angles and sides: A triangle with one angle greater than 90 degrees and two sides of equal length.

Back

Obtuse Isosceles

Front

Find the measure of the missing angle in a triangle where the other two angles are 40° and 90°.

Back

50°

Front

What is the sum of the angles in any triangle?

Back

180°

Front

What type of triangle has all angles less than 90 degrees?

Back

Acute triangle

Front

What do you call a triangle with one right angle?

Back

Right triangle

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.