Triangle Angles 180!

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

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

Back

Right triangle.

Front

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

Back

180 - (angle1 + angle2) = missing angle.

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

Isosceles triangle.

Front

What is the measure of the third angle if two angles are 50 degrees and 60 degrees?

Back

70 degrees.

Front

What do you call a triangle with all angles less than 90 degrees?

Back

Acute triangle.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the angles is always 180 degrees.

Front

If one angle of a triangle is 120 degrees, what can you say about the other two angles?

Back

They must each be less than 60 degrees.

Front

What is the measure of the third angle if two angles are 30 degrees and 70 degrees?

Back

80 degrees.

Front

How do you find the value of x in a triangle if you know two angles?

Back

Use the equation x = 180 - (angle1 + angle2).