Unit 7
Glossary
Grade 4
acute angle
An angle that measures less than 90 degrees.
angle
A figure made up of 2 rays that share the same starting point.
degree
A unit of rotation used to measure angles. Each degree is
divisor
The number we are dividing by, which can represent the size of the groups or the number of groups. Example: When 37 is divided by 5, we call 5 the divisor.
intersecting lines
Lines that cross.
line
A set of points that are arranged in a straight path and extend infinitely in opposite directions.
line segment or segment
A part of a line with 2 endpoints and all of the points in between them.
obtuse angle
An angle that measures greater than 90 degrees.
parallel lines
Lines that never intersect.
perpendicular lines
Intersecting lines that create 4 right angles.
point
A location along a line or in space.
quotient
The result of dividing one number by another.
ray
A part of a line that starts at 1 point and goes on infinitely in 1 direction.
right angle
An angle that measures 90 degrees.
straight angle
An angle that measures 180 degrees.
vertex
The point that 2 rays share when they form an angle.