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📄 SAT Math Reference Sheet
Area & Circumference
r
Circle
A = πr²
C = 2πr
ℓ w
Rectangle
A = ℓw
b h
Triangle
A = ½bh
b₁ b₂ h
Trapezoid
A = ½(b₁+b₂)h
Volume
Rectangular Prism
V = ℓwh
h
Cone
V = ⅓πr²h
Cylinder
V = πr²h
r
Sphere
V = 4/3 πr³
base h
Pyramid
V = ⅓ℓwh
Special Right Triangles
x x√3 2x 60° 30°
30-60-90 Triangle
sides: x, x√3, 2x
s s s√2 45° 45°
45-45-90 Triangle
sides: s, s, s√2
Key Facts
Pythagorean a² + b² = c² (c = hypotenuse)
Circle arcs 360° in a full circle; arc length = (θ/360)·2πr
Triangle ° Sum of interior angles = 180°
Linear pair Two angles forming a straight line sum to 180°
Slope m = (y₂ − y₁) / (x₂ − x₁)
Midpoint ((x₁+x₂)/2 , (y₁+y₂)/2)
Distance d = √((x₂−x₁)² + (y₂−y₁)²)
Quadratic x = (−b ± √(b²−4ac)) / 2a
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