4.5 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 do the angles in an equilateral triangle measure?

Back

The angles in an equilateral triangle each measure 60 degrees.

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

How many equal sides does an isosceles triangle have?

Back

An isosceles triangle has at least two equal sides.

Front

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

Back

In an isosceles triangle, the angles opposite the equal sides are also equal.

Front

Can an equilateral triangle be classified as isosceles?

Back

Yes, an equilateral triangle is a specific type of isosceles triangle because it has at least two equal sides.

Front

What is the formula for calculating 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

What is the definition of the base of a triangle?

Back

The base of a triangle is any one of its sides, often chosen as the side on which the triangle is considered to be standing.