Isosceles Triangles practice

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are also equal.

Front

What is the base of an isosceles triangle?

Back

The base of an isosceles triangle is the side that is not equal in length to the other two sides.

Front

What are the properties of the angles in an isosceles triangle?

Back

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

Front

How do you find the vertex angle in an isosceles triangle?

Back

The vertex angle can be found by subtracting the sum of the base angles from 180 degrees.

Front

If the base angles of an isosceles triangle are known, how can you find the vertex angle?

Back

The vertex angle can be calculated using the formula: Vertex Angle = 180° - 2(Base Angle).

Front

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

Back

The sum of the angles in any triangle is always 180 degrees.

Front

How do you solve for an unknown angle in an isosceles triangle?

Back

Set up an equation based on the properties of the triangle and solve for the unknown angle.

Front

What is the formula for the sum of angles in a triangle?

Back

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

Front

If one base angle of an isosceles triangle is 40°, what is the measure of the vertex angle?

Back

The vertex angle would be 100°.

Front

What is the significance of the vertex angle in an isosceles triangle?

Back

The vertex angle is the angle formed by the two equal sides of the triangle.