ACT Prep Formula (Math)
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21 Terms
the slope-intercept form of a line
y=mx+b
area of a circle
A=πr2
the Pythagorean theorem
a2+b2=c2
the midpoint formula
(x1+x2/2,y1+y2/2)
the volume of a rectangular solid
V=lwh
the area of a circle
A=πr2
the equation of a circle
(x-h)2+(y-k)2=r2
the trigonometric ratio of tangent
opp/adj
the distance formula between two points
d=√(x2-x1)2+(y2-y1)2
the slope formula
m=y2-y1/x2-x1
the trigonometric ratios of cosine
adj/hyp
the circumference of a circle
C=2πr; C=πd
the area of a square
s2
the trigonometric ratios of sine
opp/hyp
the area of a triangle
A=1/2bh
the degree measure of a line
180°
define perimeter
it’s the sides of a polygon
what type of lines always have the same slope?
parallel
the sum of the interior angels of a triangle is
180°
the sum of the interior angles of a 4 sided polygon is ____ and add ____ degrees to the sum of the interior angles for each additional side added to a polygon (formula?)
360°; 180; (n-2)180
what is the formula for the area of a trapezoid?
A=1/2h(b1+b2)
Note 
Flashcards (30)