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Obtuse

90degrees is
A right triangle

Two angles that add up to 90 are?
Complimentary

Two angles that add up 180 are?
Supplementary

Two adjacent angels (touching) are?
Linear pair

Triangle that has no equal sides?
Scalene triangle

Triangle that has two equal sides?
Isosceles triangle.

Area of a triangle?
1/2bh

Perimeter of a triangle?
P= s1+s2+s3


Perimeter of square?
P=4s


Perimeter of rectangle?
2Lx2W


Perimeter of a circle?
2Pi r

Surface are of a rectangular solid?
SA = 2LW+2hW+2hL

Volume of a rectangle?
V=wlh




Rational numbers?
All integers and the fractions in between

Percent change?
New amountold amount/ old amount

Oder of operations
PEMDAS

