Isosceles & equilateral triangles

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length. The angles opposite these sides are also equal.

Front

What is an equilateral triangle?

Back

Front

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

Back

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.

Front

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

Back

Front

How do you find the measure of the third angle in a triangle if you know the other two angles?

Back

Front

What is the formula for the area of a triangle?

Back

Front

What is the definition of a midpoint?

Back

The midpoint of a line segment is the point that divides the segment into two equal parts.

Front

Back

Front

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

Back

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