SSG 4.3 Isosceles and Equilateral Triangles

Front

What are the properties of an equilateral triangle?

Back

All three sides are of equal length and all three angles measure 60°.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60°.

Front

How many sides does an isosceles triangle have?

Back

An isosceles triangle has three sides, with at least two sides of equal length.

Front

What is the relationship between the angles in an isosceles triangle?

Back

The angles opposite the equal sides are also equal.

Front

If two angles of a triangle are 60° and 60°, what type of triangle is it?

Back

It is an equilateral triangle.

Front

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

Back

The sum of the interior angles of any triangle is 180°.

Front

If one angle of an isosceles triangle is 80°, what are the measures of the other two angles?

Back

The other two angles each measure 50°.

Front

What is the formula for finding the area of a triangle?

Back

Area = 1/2 * base * height.

Front

In an equilateral triangle with a side length of 6, what is the height?

Back

The height is approximately 5.2.

Front

What is the definition of an isosceles triangle?

Back

A triangle with at least two sides of equal length.