Lines and Angles Vocab

What is a two-dimensional figure?

• A figure with length, width, and height

• A figure with only length

• A figure with length and width

• A figure with no dimensions

What is a point?

• A line of infinite length

• A defined position in space

• A section of a line

• A line with two endpoints

What is a line segment?

• A line of infinite length

• A line with one endpoint

• A section of a line bounded by two endpoints

• A line extending in one direction

What is a ray?

• A line of infinite length

• A line with two endpoints

• A line extending in one direction from an endpoint

• A line with no endpoints

What is an acute angle?

• An angle measuring 90 degrees

• An angle measuring less than 90 degrees

• An angle measuring 180 degrees

• An angle measuring more than 180 degrees

What is a right angle?

• An angle measuring less than 90 degrees

• An angle measuring 180 degrees

• An angle measuring 90 degrees

• An angle measuring more than 180 degrees

What is an obtuse angle?

• An angle measuring less than 90 degrees

• An angle measuring 90 degrees

• An angle between 90 and 180 degrees

• An angle measuring 180 degrees

What is a straight angle?

• An angle measuring less than 90 degrees

• An angle measuring 90 degrees

• An angle measuring 180 degrees

• An angle measuring more than 180 degrees

What are perpendicular lines?

• Lines that never meet

• Lines at right angles to each other

• Lines that are parallel

• Lines that intersect at any angle

What are parallel lines?

• Lines that intersect at right angles

• Lines that are always an equal distance apart

• Lines that meet at a point

• Lines that curve away from each other