Geometry Vocabulary

point

• a point where two or more sides of a geometric figure meet

• formed by two rays that have the same endpoint

• an exact location in space

• an endless flat surface

Tags

CCSS.HSG.CO.A.1

line

• a unit of measurement of angles

• two figures that have the same shape and the same size

• a part of a line that has one endpoint and continues forever in one direction

• a straight path of points that goes on forever in two directions

Tags

CCSS.4.G.A.1

line segment

• an angle that measures less than 90 degrees

• a part of a line with two endpoints

• a point where two or more sides of a geometric figure meet

• when a shape can be divided and both halves are exactly alike

Tags

CCSS.HSG.CO.A.1

intersecting lines

• lines that pass through the same point

• a part of a line that has one endpoint and continues forever in one direction

• an angle that measures between 180 and 360 degrees

• a tool used to measure angles

Tags

CCSS.4.G.A.1

parallel lines

• a straight of points that goes on forever in two directions

• lines that form a 90 degree angle

• lines that never intersect

• a part of a line that has one endpoint and continues forever in one direction

Tags

CCSS.HSG.CO.A.1

perpendicular lines

• lines that never intersect

• a straight path of points that goes on forever in two directions

• an endless flat surface

• lines that form a 90 degree angle

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

ray

• a part of a line that has one endpoint and continues forever in one direction

• an exact location in space

• a point where two or more sides of geometric figure meet

• a straight path of points that goes on forever in two directions

Tags

CCSS.4.G.A.1

angle

• lines that form a 90 degree angle

• lines that pass through the same point

• formed by two rays that have the same endpoint

• an angle that measures 90 degrees

Tags

CCSS.4.G.A.1

right angle

• an angle that measures less than 90 degrees

• an angle that forms a straight line (180 degrees)

• an angle that measures between 180 and 360 degrees

• an angle that measures 90 degrees

Tags

CCSS.4.G.A.1

acute angle

• formed by two rays that have the same endpoint

• an angle that measures less than 90 degrees

• an angle that measures between 180 and 360 degrees

• an angle that measures more than 90 degrees but less than 180 degrees

Tags

CCSS.4.G.A.1