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Holt McDougal Geometry Chapter 10 & 11
Theorems & Postulatesarea addition postulate | the area of a region is equal to the sum of the areas of its nonoverlapping parts |
Formulasarea of a parallelogram | area = bh | area of a triangle | area = 1/2bh | area of a trapezoid | area = [(b1 + b2)h]/2 | area of a rhombus or kite | area = 1/2d1d2 | volume of a triangular prism | volume = base * height | volume of a rectangular prism | volume = length width height | volume of a cube | volume = edge length3 | volume of a cylinder | volume = area of the base * height |
| | Vocabularycomposite figure | a figure made up of simple shapes, such as triangles, rectangles, trapezoids, and circles | face | the flat surfaces of a 3D solid | edge | a segment that is the intersection of two faces | vertex | a point of intersection of three or more faces | prism | formed by two parallel congruent polygonal faces called bases connected by faces that are parallelograms | cylinder | formed by two parallel congruent circular bases and a curved surface that connects the bases | pyramid | formed by a polygonal base and triangular faces that meet at a common vertex | cone | formed by a circular base and a curved surface that connects the base to a vertex | cube | a prism with six square faces | net | a diagram of the surfaces of a 3D figure that can be folded to form the 3D figure | cross section | the intersection of a 3D figure and a plane | volume | the number of nonoverlapping unit cubes of a given size that will exactly fill the interior |
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