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Geometry Vocabulary
geometry terms
| Answer | Question |
|---|---|
| Acute Angle | An angle with a measure greater than 0 degrees but less than 90 degrees. |
| Acute Triangle | A triangle with three acute angles |
| Angle | Two rays that share an endpoint (vertex) |
| Congruent | Having exactly the same size and shape. |
| Endpoint | The point(s) at the end of a ray or line segment. |
| Equilateral Triangle | A triangle with three congruent sides. Each angle measures 60 degrees. |
| Geometry | The branch of mathematics that deals with the position, size, and shape of figures. |
| Hexagon | A polygon with six sides. |
| Isosceles Triangle | A triangle with at least two congruent sides and two congruent angles. |
| Line | A set of points that form a straight path extending infinitely in two directions. |
| Line Segment | A part of a line. A line segment has two endpoints and a definite length. |
| Obtuse Angle | An angle that is greater than 90 degrees but less than 180 degrees |
| Obtuse Triangle | A triangle that has one obtuse angle. |
| Octagon | A polygon with eight sides. |
| Parallel Lines | Lines lying in the same plane that are always the same distance apart. |
| Parallelogram | A quadrilateral with both pairs of opposite sides parallel. Opposite angles are congruent. |
| Pentagon | A polygon with five sides. |
| Perpendicular | At right angles. |
| Point | The smallest geometric unit. A position in space, often represented by a dot. |
| Polygon | A simple, closed, plane figure bounded by straight sides. |
| Quadrilateral | A polygon with four sides. |
| Ray | A set of points that form a straight path extending infinitely in one direction. A ray has one endpoint. |
| Rectangle | A parallelogram with four right angles. Opposite sides are congruent and parallel. |
| Regular Polygon | A polygon that has equal sides and equal angles. |
| Rhombus | A parallelogram with four congruent sides. Opposite angles are congruent. |
| Right Angle | An angle that is one-fourth of a full turn. A right angle measures 90 degrees. |
| Right Triangle | A triangle that has one right angle. |
| Scalene Triangle | A triangle with no sides congruent. |
| Square | A rectangle with congruent sides. |
| Three-Dimensional | Relating to objects that have length, width, and depth. Solid figures such as polyhedra, cones, and spheres are three-dimensional. |
| Trapezoid | A quadrilateral with exactly one pair of parallel sides. |
| Triangle | A polygon with three sides. |
| Two-Dimensional | Relating to figures that have length and width but not depth. Figures such as polygons and circles are two-dimensional. |
| Vertex | A point at which two line segments, lines, or rays meet to form an angle. |
Created by:
MrLittle5
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