Triangle Practice

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 one angle of a triangle measures 90 degrees and another measures 40 degrees, what is the measure of the third angle?

Back

The third angle measures 50 degrees.

Front

What type of triangle has all sides of equal length?

Back

An equilateral triangle.

Front

In a right triangle, what is the relationship between the lengths of the sides?

Back

The lengths of the sides follow the Pythagorean theorem: a² + b² = c², where c is the hypotenuse.

Front

What do you call a triangle with one angle greater than 90 degrees?

Back

An obtuse triangle.

Front

If two angles of a triangle are congruent, what can be said about the sides opposite those angles?

Back

The sides opposite the congruent angles are also congruent.

Front

What is an isosceles triangle?

Back

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

Front

How do you find the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.

Front

What is a scalene triangle?

Back

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