Classifying Polygons

Front

What is a polygon?

Back

A polygon is a closed shape formed by straight lines. It has at least three sides.

Front

What is a triangle?

Back

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

Front

What are the types of triangles based on angles?

Back

Triangles can be classified as acute (all angles less than 90°), right (one angle is 90°), or obtuse (one angle greater than 90°).

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length.

Front

What is a rhombus?

Back

A rhombus is a type of parallelogram where all four sides are of equal length.

Front

What is a square?

Back

A square is a special type of rhombus where all angles are right angles (90°).

Front

What is a rectangle?

Back

A rectangle is a parallelogram with four right angles.

Front

What are parallel lines?

Back

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

Front

What are perpendicular lines?

Back

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