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MATH
GEOMERTY ANGLES
| Term | Definition |
|---|---|
| Acute angle | An angle with a measure greater than 0' and less than 90'. |
| Acute Triangle | A Triangle having three acute angles. |
| Adjacent angles | Angles that have the same vertex, share a common side, and do not overlap. |
| Base | One of the two parallel congruent faces of a prism. |
| Complementary angles | Two angles are Complementary if the sum of their measures are 90'. |
| Cone | A three dimensional figure with one circular base connected by a curved surface to a single vertex. |
| Congruent | Having the same measure. |
| Congruent segments | Sides with the same length. |
| Coplanar | Lines or points that lie in the same plane. |
| Cross Section | The cross section of a solid and a plane. |
| Cylinder | A three dimensional figure with two parallel congruent circular bases connected by a curved surface. |
| Diagonal | A line segment that connects two nonconsecutive vertices. |
| Edge | The line segment when two faces of a polyhedron intersect. |
| Equilateral Triangle | A triangle having three congruent sides. |
| Face | A flat surface of a polyhedron. |
| Isoceles Triangle | A triangle having at least two congruent sides. |
| Obtuse angle | Any angle that measures greater than 90' but less than 180'. |
| Obtuse Triangle | A triangle having one obtuse angle. |
| Plane | A two dimensional flat surface that extends in all directions. |
| Polyhedron | A three dimensional figure with faces that are polygons. |
| Prism | A polyhedron with two parallel congruent faces called bases. |
| Pyramid | A polyhedron with one base that is a polygon and three or more triangular faces that meet at a common vertex. |
| Right angle | An angle that measures exactly 90'. |
| right Triangle | A triangle having one right angle. |
| Scale model | A model used to represent objects that are to large or too small to be built at actual size. |
| Scalene triangle | A triangle having no congruent sides. |
| Straight Angle | An angle that measures exactly 180'. |
| Supplementary angles | Two angles are supplementary if the sum of their measures is 180'. |
| Triangle | A figure with three sides and three angles. |
| Vertex | The point at the tip of the cone. |
| Vertical angles | opposite angles formed by the intersection of two lines. Verticle angles are congruent. |
Created by:
shelbyartley
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