Missing Angles in Triangles / Naming Triangles

Front

What is an obtuse triangle?

Back

A triangle with one angle greater than 90 degrees.

Tags

CCSS.4.G.A.2

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Tags

CCSS.8.G.A.5

Front

If a triangle has one right angle, what type of triangle is it?

Back

Right triangle.

Tags

CCSS.4.G.A.2

Front

What do you call a triangle with all sides of equal length?

Back

Equilateral triangle.

Tags

CCSS.4.G.A.2

Front

How many degrees are in each angle of an equiangular triangle?

Back

60 degrees.

Tags

CCSS.8.G.A.5

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Tags

CCSS.4.G.A.2

Front

What type of triangle has two equal sides?

Back

Isosceles triangle.

Tags

CCSS.4.G.A.2

Front

What are right angles?

Back

Angles that measure exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

How can you classify a triangle with all angles less than 90 degrees?

Back

Acute triangle.

Tags

CCSS.4.G.A.2

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary angles.

Tags

CCSS.7.G.B.5