Types of Triangles

Front

An ACUTE triangle has ________________.

Back

3 acute angles.

Front

A triangle that has one right (90 degree) angle is called a ________________.

Back

Right triangle.

Front

What type of triangle has all sides of equal length?

Back

Equilateral triangle.

Front

What type of triangle has at least two sides of equal length?

Back

Isosceles triangle.

Front

What type of triangle has no sides of equal length?

Back

Scalene triangle.

Front

A triangle with one angle greater than 90 degrees is called a ________________.

Back

Obtuse triangle.

Front

The sum of the interior angles of a triangle is ________________ degrees.

Back

180 degrees.

Front

In a right triangle, the side opposite the right angle is called the ________________.

Back

Hypotenuse.

Front

In an isosceles triangle, the angles opposite the equal sides are ________________.

Back

Equal.

Front

What is the formula to calculate the area of a triangle?

Back

Area = 1/2 * base * height.