Classifying Quadrilaterals and Triangles

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides, four vertices, and four angles.

Front

What are the types of quadrilaterals?

Back

The main types of quadrilaterals include squares, rectangles, rhombuses, parallelograms, trapezoids, and kites.

Front

What is a triangle?

Back

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

Front

What are the types of triangles based on sides?

Back

The types of triangles based on sides are equilateral (all sides equal), isosceles (two sides equal), and scalene (no sides equal).

Front

What are the types of triangles based on angles?

Back

The types of triangles based on angles are acute (all angles less than 90°), right (one angle is 90°), and obtuse (one angle is greater than 90°).

Front

What is a square?

Back

A square is a quadrilateral with four equal sides and four right angles.

Front

What is a rectangle?

Back

A rectangle is a quadrilateral with opposite sides equal and four right angles.

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides of equal length but not necessarily with right angles.

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with two pairs of parallel sides.

Front

What is a trapezoid?

Back

A trapezoid is a quadrilateral with at least one pair of parallel sides.