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geometry -beth
Chrysalis geometry vocabulary
| Term | Definition |
|---|---|
| ray | a line that starts at a point and continues on forever |
| Acute angle | Having fewer than 90 degrees |
| Angle | Where two rays join |
| arc | A continuous part of a circle; measured by the degrees formed by the two radii at the endpoints of the arc |
| chord | A segment whose endpoints are on a circle |
| circumference | Distance around a circle |
| compass | Tool used to draw circles and arcs |
| concave | In a polygon, a vertex is a point inside the polygon |
| congruent | Shapes having the exact shape and size |
| convex | None of the vertices in a polygon are contained inside the polygon |
| coordinates | Numbers that correspond to a point on a line or graph |
| degree | Angle measure |
| diagonal | Segment that connects two vertices, but is not a side of a polygon |
| diameter | Chord that passes through the center point of a circle |
| equilateral | All sides have the same length |
| hexagon | Polygon with six sides |
| isosceles | A triangle with two equal sides |
| line segment | A line that has two endpoints |
| obtuse angle | Having between 90 and 180 degrees |
| parallel | Always the same distance apart |
| pentagon | A polygon with five sides |
| perpendicular | Intersecting lines forming right angles |
| polygon | Closed, plane figure formed by line segments meeting at their endpoints |
| protractor | A device for measuring degrees in angles |
| quadrilateral | A polygon with four sides |
| radius | A segment from the center point to a point onthe circle |
| rectangle | A quadrilateral with four right angles |
| rhombus | A parallelogram with four congruent sides |
| right angle | Having exactly 90 degrees |
| scalene triangle | A triangle with no congruent (equal) sides |
| similar | Shapes having the exact shape, but a different size |
| square | A quadrilateral with four right angles and four congruent sides |
| symmetry | If you divide a shape in the middle, both sides are identical |
| trapezoid | A quadrilateral with only one pair of parallel lines |
| triangle | A polygon with 3 sides |
| vertex | Common endpoint of two rays that form an angle |
Created by:
bethdmorrison
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