Find the Missing Angle (Triangles)

Front

What is the sum of the angles in a triangle?

Back

180 degrees

Tags

CCSS.8.G.A.5

Front

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

Back

Right triangle

Tags

CCSS.4.G.A.2

Front

How do you find the missing angle in a triangle when two angles are known?

Back

Subtract the sum of the known angles from 180 degrees.

Tags

CCSS.8.G.A.5

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

If two angles in a triangle are 30 degrees and 70 degrees, what is the measure of the third angle?

Back

80 degrees

Tags

CCSS.8.G.A.5

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Tags

CCSS.2.G.A.1

Front

What is the formula to calculate the missing angle in a triangle?

Back

Missing angle = 180 - (Angle 1 + Angle 2)

Tags

CCSS.8.G.A.5

Front

If one angle of a triangle is 60 degrees and another is 60 degrees, what is the third angle?

Back

60 degrees (Equilateral triangle)

Tags

CCSS.8.G.A.5

Front

What is the difference between an equilateral triangle and an isosceles triangle?

Back

An equilateral triangle has all sides equal, while an isosceles triangle has at least two sides equal.

Tags

CCSS.4.G.A.2