5.1 Angles of Triangles

Front

What is the sum of all angles in a triangle?

Back

180°

Tags

CCSS.8.G.A.5

Front

Define an acute triangle.

Back

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

Tags

CCSS.4.G.A.2

Front

Define an obtuse triangle.

Back

A triangle that has one angle greater than 90°.

Tags

CCSS.4.G.A.2

Front

Define a right triangle.

Back

A triangle that has one angle equal to 90°.

Tags

CCSS.4.G.A.2

Front

What is an equiangular triangle?

Back

A triangle where all three angles are equal.

Tags

CCSS.4.G.A.2

Front

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

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

If a triangle has angles measuring 60°, 60°, and 60°, what type of triangle is it?

Back

It is an equiangular triangle.

Tags

CCSS.4.G.A.2

Front

What is the measure of each angle in an equilateral triangle?

Back

60°.

Tags

CCSS.8.G.A.5

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.

Tags

CCSS.8.G.A.5

Front

What is the Triangle Sum Theorem?

Back

The theorem states that the sum of the interior angles of a triangle is always 180°.

Tags

CCSS.8.G.A.5