4.6D Classifying 2D Figures

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments. Examples include triangles, rectangles, and pentagons.

Front

What defines an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a triangle?

Back

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

Front

What is a rectangle?

Back

A rectangle is a polygon with four sides, where opposite sides are equal and all angles are right angles.

Front

What is a parallelogram?

Back

A parallelogram is a four-sided polygon (quadrilateral) where opposite sides are parallel and equal in length.

Front

What is a square?

Back

A square is a special type of rectangle where all four sides are equal in length and all angles are right angles.

Front

What is a trapezoid?

Back

A trapezoid is a four-sided polygon (quadrilateral) that has at least one pair of parallel sides.

Front

What are parallel lines?

Back

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

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.