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area addition postulate
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the area of a region is equal to the sum of the areas of its nonoverlapping parts
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area of a parallelogram
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area = bh
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area of a triangle
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area = 1/2bh
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area of a trapezoid
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area = [(b1 + b2)h]/2
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area of a rhombus or kite
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area = 1/2d1d2
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volume of a triangular prism
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volume = base * height
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volume of a rectangular prism
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volume = length width height
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volume of a cube
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volume = edge length3
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volume of a cylinder
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volume = area of the base * height
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composite figure
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a figure made up of simple shapes, such as triangles, rectangles, trapezoids, and circles
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face
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the flat surfaces of a 3D solid
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edge
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a segment that is the intersection of two faces
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vertex
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a point of intersection of three or more faces
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prism
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formed by two parallel congruent polygonal faces called bases connected by faces that are parallelograms
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cylinder
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formed by two parallel congruent circular bases and a curved surface that connects the bases
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pyramid
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formed by a polygonal base and triangular faces that meet at a common vertex
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cone
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formed by a circular base and a curved surface that connects the base to a vertex
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cube
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a prism with six square faces
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net
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a diagram of the surfaces of a 3D figure that can be folded to form the 3D figure
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cross section
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the intersection of a 3D figure and a plane
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volume
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the number of nonoverlapping unit cubes of a given size that will exactly fill the interior
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
