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WGU Math Stack #71366
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weight
The measure of force of objects exerted by gravitational pull.
Used on Earth with mass interchangeably.
Rectangle Perimeter
P=2l+2w
area
A measure of the interior of a planar (flat) figure.
volume
A measure of the interior of a solid; the # of unit cubes
necessary to fill the interior of such a solid.
perimeter
The distance around a figure.
mass
A quantity of matter, as opposed to weight which is a force
exerted by gravitational pull.
skip counting
Mathematic technique for teaching multiplication.
rote counting
Counting by memory, but without understanding of actual
concrete objects.
rounding
identify place value, if # to the right is 5 or higher, round place
value # up 1 and change all numers to the right of it to zeros. If
# to the right is less than 5 than leave place value # alone and
change all #s to right to zero.
prime numbers
Divisible only by 1 and itself.
Rectangle Area
A=lw
Triangle Perimeter
P=a+b+c
Triangle Area
A=1/2 bh
Circle Perimeter
C=2πr
Circle Area
A=πr²
Rectangular solid total surface area
2lw+2lh+2wh
Rectangular solid volume
lwh
Right circular cylinder solid total
surface area
2πr(h + r)
Right circular cylinder solid volume
πr²h
Pythagorean Theorum
In a right triangle, the square of the hypotenuse is equal to the
sum of the squares of the other two sides. a²+b²=c²
Right angle
always 90°
Sphere total surface area
A=4πr²
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View Full DocumentSphere volume
4/3πr²
obtuse
angle measuring more than 90° and less than 180°
acute
angle measuring less than 90°
theorem
A statement that can be proved using definitions, postulates,
and previously proven theorems.
straight angle
180°
supplementary angles
two positive angles whose sum is 180°
transversal
a line that intersects two or more lines in the same plane at
different points.
trapezoid
a quadrilateral with only two pair of opposite sides parallel.
tangent
a line that lies in the same plane as a circle and intersects the
circle in exactly one point.
corresponding angles
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 Spring '11
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