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7th Math C8 Savvas
Pruit 7th Math C8 Savvas
| Term | Definition |
|---|---|
| adjacent angles | angles that have a common vertex, common side, and no overlap |
| complementary angles | two angles whose sum is exactly 90 |
| composite figure | a complex geometric shape made by combining two or more basic shapes |
| constant of proportionality | the constant ratio between two directly proportional quantities |
| cross section | a flat, 2D shape revealed when you slice straight through a 3D object |
| scale drawing | a proportional, two-dimensional representation of an actual object of place |
| scale factor | a number used to multiply or divide the dimensions of an object to make a proportional enlargement or reduction |
| supplementary angles | two angles whose sum is exactly 180 |
| vertical angles | pairs of opposite angles formed by the intersection of two straight lines (creating an "X" shape) |
| algebraic expression | a mathematical phrase that combines numbers, variables and mathematical operators |
| angle measure | the size of the space between two intersecting lines, rays, or planes using degrees |
| area | the amount of two-dimensional space a flat shape occupies |
| circumference | the distance around the outside of a circle |
| compose | to combine smaller shapes to form a larger, new one |
| decompose | to break down larger complex shapes into smaller simple ones |
| diameter | a straight line segment that passes directly through the center of a circle or sphere, with both endpoints resting on the edge |
| dimensions | the measure of the size and extent of an object |
| double number line | a visual model that pairs two parallel number lines to show a proportional relationship or equivalent ratio between two different quantities |
| equilateral | having all sides of equal length |
| horizontal | a flat direction or orientation that runs parallel to the horizon, moving straight from left to right (or right to left) |
| included angle | the angle formed directly between two adjacent sides of a polygon |
| percent | a way of expression a number or ratio as a fraction of 100 |
| perpendicular | two lines, segments, or rays intersect to form a perfect right angle |
| pi | the ratio of a circles circumference to its diameter |
| proportion | an equation stating that two ratios or fractions are equal |
| proportional relationship | when two quantities change in a way that maintains a constant, equivalent ratio |
| protractor | a geometric tool used for measuring and drawing angles |
| quadrilateral | a two-dimensional, closed shape made of exactly four straight sides, four vertices, and four angles |
| radius | a line segment that extends from the center of a circle or sphere to its outer edge |
| rectangular prism | a 3-dimensional solid shape with six flat faces, where all the faces are rectangles |
| revolution | a full, 360 degree rotation |
| right angle | an angle that measures exactly 90 |
| right rectangular prism | a 3D geometric shape with six flat faces , all of which are rectangles and meet at 90 degree angles |
| skewed | neither parallel nor do they intersect |
| surface area | the total area covering the outside of a three-dimensional object |
| three-dimensional figure | a solid object that has length, width, and height ( or depth) |
| triangle | three-sided polylgon |
| two-dimensional figure | a completely flat plane shape that has only two measurable dimensions, length and width |
| vertex | a corner or a point where two or more lines, line segments, or rays meet |
| vertical | anything that goes straight up and down (perpendicular to the horizon) |
| volume | the measure of the amount of three-dimensional space an object or closed surface occupies |
| nonincluded angle | any angle in a polygon that does not sit between two specific sides |
Created by:
PRO Teacher
shelleypruit