2D Geometry Vocabulary

A closed figure with three or more sides. Must have straight sides, no curves and 2D (flat)

• right angle

• polygon

• parallel

• congruent

characteristics used to describe something

• polygon

• right angle

• attributes

• parallel

a polygon with four sides

• quadrilateral

• polygon

• right angles

• parallel

a pair or set of lines that never touch or cross

• polygon

• right angles

• quadrilaterals

• parallel

an angle that looks like an "L" in the corner of a shape. Can fit a square in the corners of the shape.

• right angle

• polygon

• quadrilateral

• equivalent

the sides of the shape are equal in size

• polygon

• right angles

• Equivalent Sides

• quadrilateral

Having the same size and shape

• congruent

• polygon

• quadrilateral

• parallel

a quadrilateral with four right angles and four equivalent sides. Also known as a type of polygon, parallelogram, rectangle, and rhombus.

• retangle

• rhombus

• square

• triangle

a quadrilateral with four equivalent sides and NO right angles

Also known as a type of polygon and parallelogram

• square

• rectangle

• trapezoid

• rhombus

A quadrilateral with two pairs of parallel sides

• polygon

• parallelogram

• right angles

• triangle