A unit for measuring angles. It is based on dividing one complete circle into 360 equal parts.

A tool used to measure and draw angles.

Two rays or lines segments that share an endpoint.

An angle with a measure of less than 90 degrees.

An angle with a measure of exactly 90 degrees.

An angle with a measure greater than 90 degrees.

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Lessons 31-32 vocab

iReady Unit 5 L31-32 vocabulary

Term	Definition
degree	A unit for measuring angles. It is based on dividing one complete circle into 360 equal parts.
protractor	A tool used to measure and draw angles.
angle	Two rays or lines segments that share an endpoint.
acute angle	An angle with a measure of less than 90 degrees.
right angle	An angle with a measure of exactly 90 degrees.
obtuse angle	An angle with a measure greater than 90 degrees.