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Geometry Words
Vocabulary words
| Geometry Word | Word Meaning |
|---|---|
| Acute angle | An angle whose measure is between 0º and 90º. |
| Acute triangle | A triangle whose angles are all acute angles. |
| Angle | Two rays that have the same endpoint. |
| Degree (º) | A unit of measure for angles and temperature. |
| Isosceles triangle | A triangle with at least two congruent sides. |
| Line | A straight path of points that goes on forever in two directions. |
| Line segment | Part of a line having two endpoints. |
| Obtuse angle | An angle whose measure is between 90º and 180º. |
| Obtuse triangle | A triangle in which one angle is an obtuse angle. |
| Octagon | A polygon with 8 sides. |
| Parallel lines | In a plane lines that never cross and stay the same distance apart. |
| Pentagon | A polygon with 5 sides. |
| Parallelogram | A quadrilateral with both pairs of opposite sides parallel. |
| Perpendicular lines | Two lines that intersect to from square corners or right angles. |
| Plane | An endless flat surface. |
| Point | An exact location in space. |
| Polygon | A closed plane figure made up of line segments. |
| Protractor | An instrument used to measure and draw angles. |
| Quadrilateral | A polygon with 4 sides. |
| Ray | Part of line a that has one endpoint and extends forever in one direction. |
| Vertex(a) | THe common endpoint of two rays in an angle. |
| Vertex(b) | The point at which three or more edges meet in a solid figure. |
| Vertex(c) | The point of a cone. |
| Straight angle | An angle measuring 180º. |
| Equilateral triangle | A triangle whose sides all have the same length. |
| Hexagon | A polygon with 6 sides. |
| Generalization | A general statement. Ex: A generalization about rectangles applies to all rectangles. |
| Right angle | An angle whose measure is 90º. |
| Intersecting lines | Lines that pass through the same point. |
| Regular polygon | A polygon that has sides of equal length and angles of equal measure. |
| Right triangle | A triangle in which one angle is right angle. |
| Scalene triangle | A triangle in which no sides have the same length. |
| Triangle | A polygon with 3 sides. |
| Rectangle | A parallelogram with four right angles. |
| Rhombus | A parallelogram with all sides the same length. |
| Trapezoid | A quadrilateral that has exactly one pair of paralegal lines. |
| Square | A rectangle with all sides the same length. |
| Cube | A solid figure with six flat surfaces called faces. All the faces are squares. |
| Solid figure | A figure that has three dimensions and takes up space. |
| Edge | A line segment where two faces meet in a solid figure. |
| Face | A flat surface of a polyhedron. |
| Prism | A solid figure with two congruent parallel bases and faces that are parallelograms. |
Created by:
17muBart
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