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 is the property of the angles in an isosceles triangle?

Back

The angles opposite the equal sides are also equal.

Front

If the two equal sides of an isosceles triangle are each 10 cm, what is the minimum possible length of the base?

Back

The minimum possible length of the base is greater than 0 cm.

Front

What is the formula for the area of an isosceles triangle?

Back

Area = (base * height) / 2.

Front

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

Back

The base angles are each 70 degrees.

Front

How do you classify a triangle with one angle greater than 90 degrees?

Back

It is classified as an obtuse 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 degrees.

Front

If the lengths of the two equal sides of an isosceles triangle are 8 cm, what is the maximum length of the base?

Back

The maximum length of the base is less than 16 cm.

Front

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

Back

The larger the angle, the longer the opposite side.

Front

If the base of an isosceles triangle is 12 cm and the height is 5 cm, what is the area?

Back

Area = (12 * 5) / 2 = 30 cm².