Geometry Vocabulary

The sides that are always the same distance apart.

• angle

• parallel

• polygon

• quadrilateral

Tags

CCSS.HSG.CO.A.1

angle

• a polygon with four equal sides

• the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.

• a meeting point of two lines that form an angle.

• a quadrilateral with exactly one pair of parallel sides

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

intersecting lines

• two sides that are always the same distance apart

• an L shaped angle, a right angle

• when two lines cross each other

• a closed 2D figure

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

polygon

• a quadrilateral with two pairs of parallel sides

• a parallelogram with 4 right angles

• a closed two-dimensional (2D) shape with 3 or more sides

• a square angle

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

parallelogram

• two sides that are always the same distance apart

• angle

• vertex

• A quadrilateral with two pairs of parallel sides

Tags

CCSS.4.G.A.2

rectangle

• a parallelogram and quadrilateral with 4 right angles

• A quadrilateral with exactly on pair of parallel sides

• a quadrilateral with no right angles

• a 3 sided polygon

Tags

CCSS.5.G.B.4

trapezoid

• A quadrilateral with 2 pairs of parallel sides

• A quadrilateral with exactly (only one) pair of parallel sides

• a 6 sided polygon

• A parallelogram with 4 right angles and 4 equal sides

An L shaped, 90 degree, square angle

• acute angle

• obtuse angle

• right angle

Tags

CCSS.4.G.A.1

acute angle

• an angle greater than 90 degrees

• an angle greater than 90 degrees

• an angle that is less than 90 degrees

Tags

CCSS.4.G.A.1

parallel

• a closed 2D shape

• quadrilateral

• a 90 degree angle

• two sides that are always the same distance apart

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1