Geometry- Classifying Shapes by Lines and Angles

Front

What do squares and rectangles have in common?

Back

All right angles.

Front

What is a trapezoid?

Back

A quadrilateral with at least one pair of parallel sides.

Front

What are parallel lines?

Back

Lines that never intersect and are always the same distance apart.

Front

What is an obtuse angle?

Back

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

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

How many lines of symmetry does a square have?

Back

Four lines of symmetry.

Front

How many lines of symmetry does a rectangle have?

Back

Two lines of symmetry.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.