4th grade GEO vocab

Front

What is an angle that measures less than 90 degrees?

Back

Acute angle

Front

What tool is used to measure and draw angles?

Back

Protractor

Front

What has a beginning and an end?

Back

Line segment

Front

What is a small black dot on a surface called?

Back

Point

Front

What is the space within a two-dimensional shape?

Back

Area

Front

What do you call an angle that measures exactly 90 degrees?

Back

Right angle

Front

What is an angle that measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What is the term for the point where two lines meet?

Back

Vertex

Front

What do you call a straight path that extends infinitely in both directions?

Back

Line

Front

What is a part of a line that has one endpoint and extends infinitely in one direction?

Back

Ray