Isosceles Triangles

Front

What is an isosceles triangle?

Back

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

Front

What can be said about the angles opposite the equal sides in an isosceles triangle?

Back

The angles opposite the equal sides are also equal.

Front

If @@ar{AB} eq ar{AC}@@, what can be inferred about angles

Back

If @@ar{AB} eq ar{AC}@@, then

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 base angle of an isosceles triangle measures 40°, what is the measure of the other base angle?

Back

The other base angle also measures 40°.

Front

How do you find the vertex angle of an isosceles triangle if the base angles are known?

Back

The vertex angle can be found using the formula: Vertex angle = 180° - 2 * (base angle).

Front

In an isosceles triangle, if the base angles are 40°, what is the vertex angle?

Back

The vertex angle is 100°.

Front

What is the relationship between the lengths of the sides and the angles in an isosceles triangle?

Back

In an isosceles triangle, the longer side is opposite the larger angle.

Front

Back

It can be concluded that

Front

What is the formula to find the height of an isosceles triangle given the base and the equal sides?

Back