Triangles Practice

Front

What are the three main types of triangles based on side lengths?

Back

Equilateral, Isosceles, Scalene.

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length and all three angles measuring 60 degrees.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length and the angles opposite those sides are equal.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

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

Back

180 degrees.

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the Pythagorean theorem?

Back

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 (a² + b² = c²).

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the definition of a right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Front

What is the relationship between the sides of a right triangle?

Back

The lengths of the sides must satisfy the Pythagorean theorem.