Beginning of Geometry

What does the perpendicular mean?

• Complementary Angles

• Forms a 90 angle

• Congruent

• It's a square

What does this represent?

• line segment AB

• line AB

• ray AB

• distance AB

What does this represent?

• line segment AB

• line AB

• ray AB

• distance AB

A straight path with no beginning or end is a...

• ray

• line

• plane

• angle

Part of a line that has a beginning, but no end is called a...

• line segment

• ray

• angle

• plane

Part of a line that has a beginning and an end is called a...

• ray

• plane

• angle

• line segment

Which one is NOT a way to name this angle?

• ∠ABC

• ∠CAB

• ∠1

• ∠A

A triangle with one 90 degree right angle.

• Acute Triangle

• Right Triangle

• Obtuse Triangle

• Equilateral Triangle

Two lines that intersect at 90 degree angles.

• Parallel Lines

• Skew Lines

• Perpendicular Lines

• Line Segment

An angle that measures greater than 90 degrees.

• Complimentary Angles

• Straight Angle

• Right Angle

• Obtuse Angle