Isosceles and Equilateral 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 an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length.

Front

What is the sum of the interior angles of a triangle?

Back

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

Front

If two sides of a triangle are equal, what can be said about the angles opposite those sides?

Back

The angles opposite the equal sides are also equal.

Front

In an isosceles triangle, if the equal sides 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 a triangle?

Back

The area of a triangle can be calculated using the formula: Area = 1/2 * base * height.

Front

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

Back

The area is 30 cm².

Front

What is the relationship between the sides of an equilateral triangle and its angles?

Back

In an equilateral triangle, all sides are equal, and all angles measure 60 degrees.

Front

How do you find the height of an isosceles triangle given the lengths of the equal sides and the base?

Back

You can use the Pythagorean theorem to find the height.

Front

What is the Pythagorean theorem?

Back