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, each measuring 60 degrees.

Front

What is an equiangular triangle?

Back

An equiangular triangle is a triangle in which all three angles are equal.

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 the vertex angle of an isosceles triangle is 80 degrees, what are the measures of the base angles?

Back

The base angles would each measure 50 degrees.

Front

What is the classification of a triangle with one angle greater than 90 degrees?

Back

It is classified as an obtuse triangle.

Front

What is the classification of a triangle with all angles less than 90 degrees?

Back

It is classified as an acute triangle.

Front

How can you determine if a triangle is isosceles?

Back

A triangle is isosceles if at least two of its sides are of equal length.

Front

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

Back

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

Front

What is the formula for finding the area of a triangle?

Back

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