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41 Cards in this Set
- Front
- Back
perpendicular line
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line that intersects to form right angles
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parallel line
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line in a plane that doesn't intersect
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line
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straight path that extends without end in opposite directions
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composite #
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# greater than 1 that has more than 2 whole # factors
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ray
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part of a line that starts @ 1 endpoint & extends forever
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opposites
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2 #'s that are an equal distance from 0 on a number line
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diameter
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line segment that passes through the center of a circle & has endpoints on the circle, or the length of that segment
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rational #
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any # that can be expressed as a ratio of 2 integers
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circle
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the set of all points in a plane that are the same distance from a given point called the center
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isosceles triangle
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triangle with at least 2 congruent sides
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scalene triangle
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triangle with no congruent sides
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equilateral triangle
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triangle with 3 congruent sides
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point
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an exact location in space
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GCF(greatest common factor)
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the largest common factor of 2 or more given #'s
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LCM(least common multiple)
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smallest #, other than 0, that is a multiple of 2 or more given #'s
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quadrant
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the x- & y- axes divide the coordinate plane into 4 regions
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reciprocal
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1 of 2 #'s whose product is 1
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acute angle
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angle that measures less than 90 degrees
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obtuse angle
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angle whose measure is greater than 90 degrees but less than 180 degrees
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base
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a side of a polygon; a face of a 3D figure by which the figure is measured or classified
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exponent
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# that indicates how many times the base is used as a factor
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absolute value
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the distance of a # from 0 on a # line; shown by ll
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Area of a circle
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A=πr^2
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Area of a parallelogram
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A=bh
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Area of a square
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A=s^2
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Area of a triangle
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A=1/2bh
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Area of a trapezoid
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A=1/2h(b1+b2)
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Circumference of a circle
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∏d
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Volume of a prism
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V=Bh
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Volume of a rectangular prism
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V=l(slant height)wh
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Volume of a cube
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V=s^3
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Volume of a cylinder
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V=∏r^2h
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Volume of a pyramid
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V=1/3Bh
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Volume of a cone
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V=1/3∏r^2h
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Volume of a sphere
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V=4/3∏r^3
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Surface Area of a prism
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SA=2B+Ph
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Surface area of a rectangular prism
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SA=2l(slant height)w+2l(slant height)h+2wh
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Surface area of a cube
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SA=6s^2
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Surface area of a cylinder
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SA=2B+2∏rh
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Surface area of a regular pyramid
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SA=B+1/2pl(slant height)
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Surface area of a cone
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SA=∏r^2+∏rl(slant height)
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