lines rays and angles for 4th grade

Front

What is a ray?

Back

A ray is a part of a line that has one endpoint and extends infinitely in one direction.

Front

What is a line?

Back

A line is a straight path that extends infinitely in both directions with no endpoints.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a point in geometry?

Back

A point is a specific location in space that has no size or dimension.

Front

Which capital letter has an acute angle?

Back

The letter V has an acute angle.

Front

How many degrees are in a right angle?

Back

There are 90 degrees in a right angle.

Front

How can you identify an acute angle?

Back

An acute angle can be identified as being smaller than a right angle (less than 90 degrees).

Front

What does it mean for lines to be parallel?

Back

Parallel lines are lines that never meet and are always the same distance apart.