Geometry Basics Vocabulary

If two lines intersect, they intersect in a ...

• point

• plane

• ray

• bisector

Points that lie in the same plane are called ____________________.

• coplanar points

• collinear points

• line segment

• defined terms

What is a segment bisector?

• A segment, line, or plane that intersects a segment at its midpoint.

• A segment, line, or plane that intersects a segment at any point.

• A segment, line, or plane that intersects a segment at its endpoint.

• A segment, line, or plane that intersects a segment at its origin.

What is an angle with a degree measure of 90° called?

• Acute angle

• Obtuse angle

• Right angle

• Straight angle

What does the Segment Addition Postulate state?

• If A, B, and C are collinear points and B is between A and C, then AB + BC = AC.

• If A, B, and C are collinear points and B is between A and C, then AB + AC = BC.

• If A, B, and C are collinear points and B is between A and C, then AC + BC = AB.

• If A, B, and C are collinear points and B is between A and C, then AB = BC + AC.

What is the formula used to find the midpoint between two endpoints?

• M = ((x1 + x2) / 2, (y1 + y2)

• M = (x1 + x2, y1 + y2)

• M = ((x1 - x2) / 2, (y1 - y2) / 2)

• M = (x1 - x2, y1 - y2)

What is the symbol for perpendicular lines?

• ⊥

• ‖

• ∠

• ∥

What is the definition of an angle?

• The intersection of two rays at an endpoint.

• The intersection of two lines at an endpoint.

• The intersection of two segments at an endpoint.

• The intersection of two planes at an endpoint.

What is an angle with a degree measure less than 90° called?

• Right angle

• Acute angle

• Obtuse angle

• Straight angle

What is an angle with a degree measure greater than 90° called?

• Right angle

• Acute angle

• Obtuse angle

• Straight angle