# cueFlash

## Glossary of Feb. 4

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cubic unit
a cube with edges that are 1 unit long
volume
the number of cubic units needed to fill a solid figure
square unit
a square with sides that are each 1 unit long
area
the number of square units needed to cover the region inside a figure
perimeter
the distance around a figure
peri
around
meter
measure
symmetric
your figure is symmetric because the two halves of the figure match
line of symmetry
the fold line is the line of symmetry
flip
a flip of a figure gives its a mirror image
congruent
two figures are congruent if they have the same size and shape
rectangle
four right angles and opposite sides are the same length
square
four right angles and all sides are the same length
parallelogram
Opposite sides are parallel and all sides are the same length
rhombus
opposite sides are parallel and all sides are the same length
trapezoid
there is only one pair of parallel sides
polygon
a closed figure made up of parallel sides
side
EACH LINE SEGMENT ON A POLYGON IS A SIDE
equilateral triangle
all sides are the same length
isosceles triangle
at least two sides are the same length
scalene triangle
no sides are the same length
right triangle
one angle is a right angle
acute triangle
all three sides are acute angles
obtuse triangle
one angle is an obtuse angle
angle
an angle is made by two rays that have the same end point.