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 and all three angles are equal to 60 degrees.

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

How do you find the measure of an angle in an isosceles triangle?

Back

In an isosceles triangle, the angles opposite the equal sides are equal. You can use the formula: 180 - (2 * angle) = base angle.

Front

What is the relationship between the sides and angles in a triangle?

Back

In a triangle, the larger the side, the larger the opposite angle.

Front

How do you calculate the height of an isosceles triangle?

Back

The height can be calculated using the Pythagorean theorem: height = √(side^2 - (base/2)^2).

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

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Front

How do you find the length of a side in an equilateral triangle?

Back

In an equilateral triangle, all sides are equal, so if you know one side, you know the lengths of all sides.

Front

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

Back

In an equilateral triangle, all angles are equal and each measures 60 degrees.