Chapter 13 Math Vocab

Acute Angle

• two angles that measure up to 180 degrees

• an angle that is larger than a right angle but less than a straight angle

• an L shaped angle that measures 90 degrees

• an angle that measures less than a 90 degree

Adjacent Angle

• wo angles that share a common side and a common vertex but have no other points in common

• two angles that measure 90 degrees

•  two rays or line segments that have a common endpoint

• two angles that measure up to 180 degrees

Angle

• the endpoint at which two rays or line segments of an angle meet

• two rays or line segments that have a common endpoint

• two angles that share a common side and a common vertex but have no other points in common

• an exact location in space

Complementary Angle

• two angles that measure up to 180 degrees

• points that represent the ends of a line segment or ray

• two angles that measure 90 degrees

•  an exact location in space

Degree

• a tool used to measure or draw angles

• the endpoint at which two rays or line segments of an angle meet

• the unit to measure angles

• a part of a line that has one endpoint and continues to go in the other direction

Endpoints

• points that represent the ends of a line segment or ray

• two angles that measure 90 degrees

•  the endpoint at which two rays or line segments of an angle meet

• an angle that measures less than a 90 degree

Intersecting Lines

• two angles that share a common side and a common vertex but have no other points in common

• lines that never intersect

• lines that intersect at one point

• lines that intersect to form four right angles

Line

• a straight path of points that goes without end in both directions

• an exact location in space

• the endpoint at which two rays or line segments of an angle meet

• the unit to measure angles

Line Segment

• lines that never intersect

• a part of a line that includes two endpoints and all the points in between

• an angle that measures less than a 90 degree

• a straight path of points that goes without end in both directions

Obtuse Angle

• an angle that forms a straight line

• an angle that is larger than a right angle but less than a straight angle

• an L shaped angle that measures 90 degrees

• an angle that measures less than a 90 degree