Review Fall Final Exam Part 3

Front

What is a perpendicular line?

Back

A perpendicular line is a line that intersects another line at a right angle (90 degrees).

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

How do you find the range for the third side of a triangle given two sides?

Back

If the lengths of two sides are a and b, the length of the third side c must satisfy the inequality: |a - b| < c < a + b.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the Reflexive Property of Congruence?

Back

The Reflexive Property of Congruence states that any geometric figure is congruent to itself.

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 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 calculate the measure of an angle in a triangle?

Back

To find the measure of an angle in a triangle, subtract the sum of the other two angles from 180 degrees.

Front

What is the definition of a two-column proof?

Back

A two-column proof is a method of proving statements in geometry where one column lists statements and the other column lists corresponding reasons.

Front

What is the definition of base angles in an isosceles triangle?

Back

Base angles are the angles opposite the equal sides of an isosceles triangle, and they are congruent.