Points, Rays, Lines, Line Segments, and Angles

What is this?

• Line segment

• Ray

• Point

• Line Segment

What is this?

• Angle

• Line

• Line Segment

• Ray

This is what kind of angle?

• right

• acute

• obtuse

• straight

What type of angle is shown?

• acute

• obtuse

• right

• straight

What is the measurement of a right angle?

• 70

• 80

• 90

• 180

What is the definition of an acute angle?

• Lines that intersect to form right angles.

• An angle that is open more than a right angle but less than a straight angle. This angle measures between 90 and 180 degrees.

• An angle that forms a square corner and has a measure of 90 degrees.

• An angle that is open less than a right angle and has a measure less than 90 degrees.

Define Acute

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Define Right Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

What is this tool called and what is it used for?

• A ruler used to measure lines.

• A protractor used to measure lines.

• A ruler used to measure angles.

• A protractor used to measure angles.

Which angle measures about 20 degrees?

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