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EUCLID GEOMETRY - Coggle Diagram
EUCLID GEOMETRY
Triangle
Perimeter
P = a + b + c
a/b/c - sides
Area
A = 1/2
a
h
h - height
Heron Method = 0.25*√[(a+b+c)(-a+b+c)(a-b+c)(a+b-c)]
Right Triangle
Area
A = 1/2
a
b
Equilateral Triangle
Area
A = (a^2*√3)/4
Circle
Circumference
C = d*π
d - diameter
π - pi (~3.14)
Area
A = r^2*π
r - radius
Sector
Circumference
C = 2r + l
l - arc length (πrn/180)
Area
A = (π
r^2
n)/360
n - sector angle
Ellipse
Area
A = π
a
b
Circumference
C ~ π(a+b)
a/b - axis
Quadrilateral
Perimeter
P = a + b + c + d
Area
A = 1/2(ad
sinA + bc
sinC)
A/C - (opposite) angles
Trapezoid
Perimeter
P = a + b + c + d
Area
A = 1/2
h
(a+b)
Parallelogram
Perimeter
P = 2(a+b)
Area
A = ah
Rhombus
Perimeter
4a
Area
d1*d2
d1/d2 - diagonal
Rectangle
Perimeter
2(a+b)
Area
ab
Square
Perimeter
4a
Area
a^2