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 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 10 cm each, what is the minimum possible length of the base?

Back

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

Front

In an isosceles triangle, if one angle measures 40 degrees, what are the measures of the other two angles?

Back

The other two angles each measure 70 degrees.

Front

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

Back

Area = (base * height) / 2.

Front

If the base of an isosceles triangle is 8 cm and the height is 5 cm, what is the area?

Back

Area = (8 * 5) / 2 = 20 cm².

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 equal sides of an isosceles triangle are 12 cm and the base is 10 cm, what is the perimeter?

Back

Perimeter = 12 + 12 + 10 = 34 cm.

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

In an isosceles triangle, if the vertex angle is 40 degrees, what is the measure of each base angle?

Back

Each base angle measures 70 degrees.