GEO 5.1 - Triangle Sum Theorem

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

What is the measure of the angles in a triangle with angles of 30°, 60°, and 90°?

Back

The angles sum to 180°, so yes, they can form a triangle.

Front

What do you call an angle that measures exactly 90 degrees?

Back

Right angle.

Front

If a triangle has one angle measuring 75° and another measuring 19°, what is the measure of the third angle?

Back

The third angle measures 86°.

Front

What is the sum of the angles in any triangle?

Back

180°.

Front

If one angle of a triangle is 50° and another is 60°, what is the measure of the third angle?

Back

The third angle measures 70°.

Front

What type of triangle has one angle greater than 90 degrees?

Back

Obtuse triangle.

Front

What type of triangle has all angles less than 90 degrees?

Back

Acute triangle.

Front

If a triangle has angles measuring 40° and 70°, what is the measure of the third angle?

Back

The third angle measures 70°.

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle is 90°, and the sum of the other two angles is 90°.