Basic Geometric Terms

a ray that divides an angle into two equal parts.

• angle bisector

• straight edge

• midpoint

• congruent

 two lines that intersect to form right angles. 

• point

• coplanar

• perpendicular

• distance

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

an angle whose measure is more than 90° and less than 180°. 

• angle

• point

• obtuse

• straightedge

Tags

CCSS.4.G.A.1

two angles are supplementary if the sum measures is 180.

• supplementary angles

• vertical angles

• parallel

• complementary angles

Tags

CCSS.7.G.B.5

the length of a line between the starting point and the end point. 

• perpendicular

• complementary angles

• parallel

• distance

Tags

CCSS.HSG.CO.A.1

 is a geometric tool used to draw circles and parts of circles, called arcs. 

• straight edge

• compass

• angle

• line segment

the middle of two points. 

• midpoint

• distance

• parallel

• complementary angles

Tags

CCSS.HSG.GPE.B.6

two lines in the same plane that do not intersect.

• parallel

• linear pair

• distance

• congruent

Tags

CCSS.HSG.CO.A.1

having the same endpoint but opposite directions. 

• coplanar

• line segment

• opposite rays intersection

• side

Tags

CCSS.4.G.A.1

points on the same plane.

• acute

• right

• angle bisector

• coplanar