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CAI Geometry Vocab 1
| Term | Definition |
|---|---|
| Acute | angle that has a measure of less than 90 degrees |
| Area | the measurement if square units of the interior region of a 2-dimensional figure |
| Right | angle that has a measure of exactly 90 degrees |
| Obtuse | angle that has a measure of more than 90 degrees |
| Adjacent | two angles that lie in the same plane, have a common vertex and a common side, but not common interior points. |
| Bisector | something that splits an object in 2 equal parts |
| Distance | the length of a segment between two points |
| Circumference | the distance around the outside of a circle calculated by 2πr or πd |
| Collinear | on the same line |
| Coplanar | on the same plane |
| Complementary | two angles that add to 90 degrees |
| Congruent | same size, same shape |
| Construction | To draw a shape, line or angle accurately using a compass and straightedge |
| Isometric Drawing | Way to draw a 3D figure where all objects and lengths the same size will be drawn the same size whatever their position. |
| Linear pair | two adjacent angles that form a straight line |
| Net | a 2-d pattern that can be folded to form a solid 3-d |
| Midpoint | Midpoint-the point on a segment exactly halfway between the endpoints of the segment |
| Orthographic Drawing | two-dimensional drawing of a three-dimensional object, using two or more additional drawings to show additional views of the object |
| Perpendicular | intersecting to form right angles |
| point | a defined position in space |
| line | is made up of points, it has no thickness or width |
| perimeter | the distance around a two-dimensional shape |
| plane | flat surface made up of points that has no depth and extends indefinitely |
| postulate/axiom | A statement, also known as an axiom, which is taken to be true without proof. That are the basic structure from which theorems are derived |
| ray | a part of a line that begins at a point and continues without end in one direction |
| segment | a measureable part of a line that consists of two points, called endpoints, and all of the points between them |
| supplementary | two angles with measures that have a sum of 180o |
| vertex | the corner of a plane polygon or of a prism |
| vertical angles | 2 nonadjacent angles formed by 2 intersecting lines |
| angle | the opening that is formed when two lines, line segments, or rays intersect |
Created by:
abankes
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