Triangles

Front

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

Back

The sum of the interior angles of a triangle is always 180°.

Front

If two angles in a triangle are known, how can you find the third angle?

Back

You can find the third angle by subtracting the sum of the known angles from 180°.

Front

What type of triangle has one angle that measures 90 degrees?

Back

A right triangle has one angle that measures 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle measuring more than 90 degrees.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides and all three angles are different.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles measure less than 90 degrees.

Front

How can you classify a triangle based on its sides?

Back

Triangles can be classified as equilateral (all sides equal), isosceles (two sides equal), or scalene (no sides equal).

Front

What is the relationship between the angles and sides of a triangle?

Back

In a triangle, the larger the angle, the longer the opposite side.

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.