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15 Cards in this Set
 Front
 Back
a2b2

(ab)(a+b)


a2+2ab+b2

(a+b)2
a22ab+b2 = (ab)2 

ax2+bx+c

= 0


Finding the distance b/n two points
D = 
square (x1x2)2 + (y1y2)2


Using two point to find the slope:
Slope = 
Change in y
 = Rise/Run Change in x 

Finding the Midpoint
if the endpoints are (x1, y1) and (x2, y2), the midpoint is 
(x1+x2) (y1+y2)
  2 2 

n
X = 
1
 n X 

Using an Equation to Find the Slop (slope intercept)
Y = 
Mx+b


Length of an Arc
if n is the degree measure of the arc's central angle then Length of Arc = 
(n/360)(2PIr)


Area of Circle =

PIR2


if n is the degree measure of the sector's central agnle, then the
Area of a Sector 
(n/360)(PIr2)


In a 454590 right triangle the sides =

x, x and x square 2


In a 306090 righttriangle, the sides =

x, x sq 3, 2x
square 3 

Area of an Equilateral triangle with side s, A =

S2 sq 3
 4 S square * square of 3 divided by 4 

Acute angel

X<90 degrees
