Classifying Triangles and Quadrilaterals

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the types of triangles based on angles?

Back

1. Acute Triangle: All angles are less than 90 degrees. 2. Right Triangle: One angle is exactly 90 degrees. 3. Obtuse Triangle: One angle is greater than 90 degrees.

Front

What are the types of triangles based on sides?

Back

1. Equilateral Triangle: All sides are equal. 2. Isosceles Triangle: Two sides are equal. 3. Scalene Triangle: All sides are different.

Front

What is a quadrilateral?

Back

A quadrilateral is a four-sided polygon.

Front

How many sides does a quadrilateral have?

Back

A quadrilateral has 4 sides.

Front

What are the types of quadrilaterals?

Back

1. Square: All sides equal and all angles are right angles. 2. Rectangle: Opposite sides equal and all angles are right angles. 3. Rhombus: All sides equal but angles are not right angles. 4. Trapezoid: At least one pair of parallel sides.

Front

What is a rhombus?

Back

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

Front

What is a square?

Back

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

Front

What is a rectangle?

Back

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

Front

What is a trapezoid?

Back

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