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.

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 is the vertex angle in an isosceles triangle?

Back

The vertex angle is the angle opposite the base, formed by the two equal sides.

Front

How do you find the height of an isosceles triangle?

Back

The height can be found by drawing a perpendicular line from the vertex angle to the base, creating two right triangles.

Front

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

Back

The angles opposite the equal sides are equal.

Front

If the base angles of an isosceles triangle are 35°, what is the vertex angle?

Back

The vertex angle is 110° (180° - 2*35°).

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

If the base of an isosceles triangle is 10 cm and the height is 5 cm, what is the area?

Back

Area = 1/2 * 10 * 5 = 25 cm².

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

How can the Pythagorean theorem be applied to isosceles triangles?

Back

It can be used to find the height when the lengths of the sides are known.