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Geometry Formulas Flashcards | StudBud

Explore/Geometry Formulas

Geometry Formulas

6 terms·StudBud Administration·1 play

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Questions 6

Answers

1
Arc Length
A=(pi)r^2(central angle/360)
X=a^2+b^2
Length= 2(pi)r (central angle/360)
r^2
2
Sector Angle area
A=(pi)r^2(central angle/360)
(n-2)180
360/n
2(pi)r (central angle/360)
3
Triangle Midsegment
DE = 1/2 (the angle of A)
a midsegment is half of the side it is parallel to (ex. DE is 1/2 BC)
There isn’t a formula for a triangular midsection
Is always equal to 180 degrees
4
Sum of the exterior angles of a polygon
(n-2)180
360
180
n^2
5
Midpoint formula
M=AB^2+BC^2
M=(X2-X1/2,Y2-Y1/2)
B=1/2(a+c)
Midpoint=(X2-X1/2, Y2-Y1/2)
6
Trapezoid midsegment
Is always equal to 180
Midsegment=(base1+base2)/2
Midsegment = 1/2 (base1+base2)
Y-y1=m(x-x1)