REACH: Geometry

Front

What is a ray?

Back

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

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

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

Front

What is an obtuse angle?

Back

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

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments.

Front

What is a characteristic of a square?

Back

A square has four equal sides and four right angles.

Front

What is a circle?

Back

A circle is a round shape with no corners or edges, and all points are equidistant from the center.

Front

What are parallel lines?

Back

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

Front

What is a triangle?

Back

A triangle is a polygon with three sides and three angles.