Lesson 23 - Classify Two-Dimensional Figures-

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

What do we call shapes that have the same number of sides and angles?

Back

Shapes that have the same number of sides and angles are called congruent shapes.

Front

What are parallel lines?

Back

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

Front

What is a polygon?

Back

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

Front

What is a rectangle?

Back

A rectangle is a quadrilateral with opposite sides that are equal and all angles that are right angles.

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides of equal length.

Front

What are perpendicular lines?

Back

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

Front

What is the difference between a line segment and a ray?

Back

A line segment has two endpoints, while a ray has one endpoint and extends infinitely in one direction.

Front

What is a triangle?

Back

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

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.