Geometry Area Test
Terms
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- Total degrees in a polygon
- (n-2) 180
- Angle measure of a regular polygon
- (n-2)180/n
- Sum of measures of angles of any polygon
- 360
- One exterior angle of a regular polygon
- 360/n
- Area of Rectangle
- A=lw
- Area of Parallelogram
- A=bh
- Area of Square
-
A=lw
A=s(s) - Area of Triangle
-
A=bh/2
A=1/2 bh - Area of Equilateral Triangle
- A=s(s)root(3)/4
- Heron's Formula
-
s=a+b+c/2
A=root(s{s-a}{s-b}{s-c}) - Area of Trapezoid
- A=(b1+b2)h/2
- Area of Rhombus or Kite
- A=d1(d2)/2
- Pick Theorem
-
A=(b/2 + i)-1
b=border point
i=interior point - Area of Circle
-
A=PIr(r)
A=Pi(r-squared) - Arc Length
- La=m/360(C)
- Area of Sector on Circle
- As=m/360(PI(r-squared))
- Area of Circle Segment
- SA=m/360(PI(r-squared))-bh/2
- Area of Regular Polygons
-
A=ap/2
A=1/2 ap
a=apothem
p=perimeter - Equation of Circle
- (x-h)2+(y-k)2=r(--squared)
- Perimeter of Similar Figures
- S1/S2=P1/P2
- Area of Similar Figures
- (S1/S2)2=A1/A2
- Volume of Similar Figures
- (S1/S2)3=V1/V2
- Surface Area of Similar Figures
- (S1/S2)2=SA/SA
- Length Probability
-
Prob X is on AB=AB/AC
[[segment over whole thing]] - Area Probability
-
Prob X in region B=area B/area A
[[region out of whole]]