Test 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

If two angles of a triangle are 55° and 30°, what is the measure of the third angle?

Back

The third angle is 95° (180° - 55° - 30° = 95°).

Front

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

Back

An obtuse triangle.

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

How do you classify a triangle with all angles less than 90°?

Back

It is classified as an acute triangle.

Front

What is the measure of each angle in a right triangle?

Back

One angle measures 90°, and the other two angles are acute, summing to 90°.

Front

If a triangle has sides of lengths 3, 4, and 5, what type of triangle is it?

Back

It is a right triangle.

Front

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

Back

The formula is: Missing Angle = 180° - (Angle 1 + Angle 2).

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths.

Front

If a triangle has angles measuring 42°, 79°, and x°, what is the value of x?

Back

x = 59° (180° - 42° - 79° = 59°).