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30 Cards in this Set
- Front
- Back
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Define an isosceles triangle |
A triangle with two congruent sides and congruent base angles |
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Area of a square |
s^2 (s is sidelength) |
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Perimeter of a square |
4s (s is sidelength) |
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Area of a rectangle |
lw (l is length, w is width) |
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Perimeter of a rectangle |
2l+2w (l is length, w is width) |
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Area of a triangle |
1/2 bh (b is base, h is height) |
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Perimeter of a triangle |
s1+s2+s3 (s1 is sidelength 1, etc.) |
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Area of a rhombus |
bh (b is base, h is height) |
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Perimeter of a Rhombus |
4s (s is sidelength) |
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Area of a trapezoid |
1/2 h(b1+b2) (h is height, b1 is base 1, b2 is base 2) |
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Perimeter of a trapezoid |
s1+s2+s3+s4 (s1 is sidelength 1, etc.) |
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Area of a circle |
πr^2 (r is radius) |
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Circumference of a circle |
2πr or πD (r is radius, D is diameter) |
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In a 30-60-90 triangle... |
a is the shortest leg, the other leg is a√3, and the hypotenuse is 2a |
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In a 45-45-90 triangle... |
the legs are a, the hypotenuse is a√2 |
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What is the midpoint formula? |
(((x1+x2)/2),((y1+y2)/2)) |
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If the length scale factor is a:b, what is the area scale factor? |
a^2:b^2 |
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If the length scale factor is a:b, what is the volume scale factor? |
a^3:b^3 |
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Volume of a sphere- |
4/3πr^3 |
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Surface area of a sphere- |
4πr^2 |
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Volume of a cube |
s^3 |
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Surface area of a cube- |
6s^2 |
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Volume of a rectangular prism- |
lwh |
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Surface area of a rectangular prism- |
2(wl+hw+lh)
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Volume of a cylinder- |
πr^2h
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Surface area of a cylinder- |
2πr^2+2πrh |
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Volume of a cone- |
πr^3 (h/3) |
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Surface area of a cone- |
πr(r+√r^2+h^2) |
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Volume of a rectangular pyramid- |
(lwh)/3 |
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Surface area of a rectangular pyramid- |
(lw)+(l√((w/2)^2+h^2))+(w√((1/2)^2+h^2) |
