201 Ch 2 Review Questions

Front

What is the Segment Addition Postulate (SAP)?

Back

The Segment Addition Postulate states that if point B is between points A and C, then AB + BC = AC.

Front

Define a linear pair of angles.

Back

A linear pair of angles is a pair of adjacent angles formed when two lines intersect. The angles are supplementary, meaning their measures add up to 180 degrees.

Front

What does it mean for angles to be complementary?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

What is the definition of a midpoint?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

Explain the concept of substitution in geometry.

Back

Substitution in geometry refers to replacing a variable or expression with another equivalent value or expression.

Front

What is the Angle Addition Postulate (AAP)?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

How do you justify the equation AD + DF = DE + DF?

Back

This can be justified using the addition property of equality, which states that if two quantities are equal, adding the same amount to both sides keeps the equation balanced.

Front

What is the definition of collinear points?

Back

Collinear points are points that lie on the same straight line.

Front

What is the relationship between vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect. They are always equal in measure.

Front

Define supplementary angles.

Back

Two angles are supplementary if the sum of their measures is 180 degrees.