Vocabulary Chapter 8 Word Scramble
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Term | Definition |
Vertex | The point where the two rays meet |
Right Angle | Exactly 90 degrees |
Acute Angle | Less than 90 degrees |
Obtuse Angle | Greater than 90 degrees |
Straight | Exactly 180 degrees |
Vertical Angle | Opposite angles formed by the intersection of two lines |
Congruent | Have the same measure |
Adjacent Angle | They share a common vertex, a common side, and do not overlap |
Prism | Three dimensional figure with at least two parallel faces |
Bases | Congruent faces that are polygons |
Pyramid | A three dimensional figure with one base that is a polygon |
Plane | A flat surface that goes on forever in all direction |
Coplanar | They lie in the same plane |
Parallel | They will never intersect |
Polyhedron | A three dimensional figure with flat surface that are polygons |
Edge | Two planes intersect in a line |
Face | A flat surface |
Vertex | Where three or more planes intersect at a point |
Diagonal | A line segment whose endpoints are vertices that are neither adjacent nor on the same face |
Cylinder | A three dimensional figure with two parallel congruent circular bases connected by a curved surface |
Cone | On circular base connected by a curved side to a single vertex |
Cross Section | The intersection of a solid and plane of the solid |
Supplementary Angles | If the sum of their measures is 180 degrees |
Complementary Angles | If the sum of their measures is 90 degrees |
Acute Triangle | All acute side |
Right triangle | 1 right triangle |
Obtuse Triangle | 1 obtuse angle |
Scalene Triangle | No congruent sides |
Isosceles Triangle | At least 2 congruent sides |
Equilateral Triangle | 3 congruent sides |
Triangle | A figure with three sides and three angles |
Congruent Segments | Sides with the same length |
Scale model | Model used to represent objects that are too large or too small to be built at actual size |
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