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7th CCSSM GEOMETRY
7th COMMON CORE GEOMETRYCOMPLETE
| Term | Definition |
|---|---|
| dimensions | a measurable extent of some kind, such as length, breadth, depth, or height. |
| scale factor | a number which scales, or multiplies, some quantity. In the equation y = Cx, C is the scale factor for x. |
| plane sections | the area created by a plane cutting through a solid. |
| area | The size of a surface; the amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle |
| surface area | The total area of the surface of a three-dimensional object. Example: the surface area of a cube is the area of all 6 faces added together. |
| volume | The amount of 3-dimensional space an object occupies; capacity |
| circumference | the distance around a circle |
| radius | the distance between the center of a circle and any point on the circle |
| diameter | the distance across a circle through its center. |
| pi | ∏ |
| supplementary angles | two angles whose measures have a sum of 180 degrees |
| vertical | at right angles to a horizontal plane; in a direction, or having an alignment, such that the top is directly above the bottom; straight up and down |
| complementary angles | two angles whose measures have a sum of 90 degrees |
| pyramid | a solid formed by polygons that has one base. The based can be any polygon and the other polygons are triangles. |
| face of a solid | a polygon that is a side of a solid |
| base | side of a polygon or a face of a polyhedron, particularly one oriented perpendicular to the direction in which height is measured, or on what is considered to be the "bottom" of the figure. |
| right rectangular prism | A prism in which the angles between the base and sides are right angles. |
| right rectangular pyramids | A pyramid having rectangular base |
| parallel lines | two lines in the same plane that do not intersect. |
| perpendicular lines | lines that intersect at right angles |
| scalene triangle | a triangle with no congruent sides |
| obtuse triangle | a triangle with one angle whose measure is between 90 degrees and 180 degrees |
| equilateral triangle | a triangle with three congruent sides |
| adjacent angles | angles that have a common vertex and a common side. The vertex of an angle is the endpoint of the rays that form the sides of the angle. |
| inscribed | The word is derived from the Latin "scribere" - to write or draw. It means to draw something inside something else. In geometry it usually means drawing one shape inside another so that it just touches. |
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artisteacher
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