Geometry: Unit 4 Review

Front

What is the Triangle Inequality Theorem?

Back

The Triangle Inequality Theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Front

What is the range of possible lengths for the third side of a triangle with sides of length 5 and 5?

Back

The range is greater than 0 and less than 10 (0 < x < 10).

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 type of triangle is it?

Back

It is an isosceles triangle.

Front

What is the definition of a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides are of different lengths.

Front

What is the definition of an equilateral triangle?

Back

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

Front

In triangle RTA, if TR > TA, what can be inferred about the angles opposite these sides?

Back

The angle opposite side TR is greater than the angle opposite side TA.

Front

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

Back

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

Front

What is the formula for calculating the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: P = a + b + c.

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.