4th grade math vocab

Front

acute angle

Back

an angle that measures more than 0 degrees but less than 90 degrees

Front

right angle

Back

an angle that measures exactly 90 degrees

Front

obtuse angle

Back

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

Front

straight angle

Back

an angle that measures exactly 180 degrees

Front

area

Back

the amount of space inside a 2 dimensional figure. A= L x W

Front

perpendicular lines

Back

lines that intersect to form right angles

Front

composite number

Back

a number that has more than 1 factor pair.

Example: 24

Front

parallel lines

Back

lines in a plane that never meet. They are always the same distance apart.

Front

vertex

Back

the common endpoint where two or more rays or line segments meet.

Front

convert

Back

to write an equivalent measurement using a different unit.

Example- pounds to ounces