Triangle angle sum theorem

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

The sum of the angles in a triangle is always equal to _____ degrees.

Back

180 degrees

Front

If one angle in a triangle is 90 degrees, the triangle is called a _____ triangle.

Back

right triangle

Front

An angle less than 90 degrees is called an _____ angle.

Back

acute angle

Front

An angle greater than 90 degrees but less than 180 degrees is called an _____ angle.

Back

obtuse angle

Front

In a triangle, if one angle measures 50 degrees and another measures 60 degrees, what is the measure of the third angle?

Back

70 degrees

Front

If two angles in a triangle are equal, the triangle is called an _____ triangle.

Back

isosceles triangle

Front

The angles opposite to equal sides in an isosceles triangle are _____ .

Back

equal

Front

In a triangle, the longest side is opposite the _____ angle.

Back

largest

Front

If the angles of a triangle are in the ratio 2:3:4, what is the measure of the largest angle?

Back

80 degrees