intro to geometry vocab

Identify this picture. 

• ray AB
• line AB
• line segment AB
• point AB

What does this image show?

• dot
• point
• circle
• angle

A line has one dimension. It is represented by a line with two arrowheads, but it extends without end.

• Point
• Line
• Plane
• Angle

Select the correct definition.

Vertical Angles

• a figure formed by two rays with a common endpoint.

• angles that share a ray.

• two angles that are opposite of each other and congruent.

• two angles that have a measure of 180 degrees.

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

Lines in different planes that will never meet.

• Parallel Lines

• Intersecting Lines

• Skew Lines

Lines in the SAME plane that will never meet.

• Perpendicular Lines

• Parallel Lines

• Skew Lines

An angle with a measure between 0 and 90 degrees is called an _____________________.

• acute angle
• right angle
• obtuse angle
• straight angle

Consists of 2 endpoints and all the points in between.

• Ray
• Line
• Line Segment
• Angle

An angle with a measure equal to 90 degrees is called a __________________________.

• right angle
• obtuse angle
• acute angle
• congruent angle