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Geometry Words
words for Chapter 8 Test
| Question | Answer |
|---|---|
| Point | A location in space |
| Line | A straight path that continues in two directions without ending |
| Line segment | A straight path that has two endpoints. |
| Ray | A straight path that starts at one endpoint and continues in one direction without end. |
| Angle | Figure made by two rays with a common endpoint. |
| Vertex | The center point of an angle |
| Protractor | A tool used to measure the degrees of angles |
| Acute | An angle that is less than 90 degrees |
| Obtuse | An angle that is more than 90 degrees |
| Right | An angle that is exactly 90 degrees, a square corner |
| Vertical angles | Angles that are opposite of each other, they are also congruent |
| Congruent | Having the same size and shape or measurement |
| Adjacent angles | Angles that share a common side or ray |
| Supplementary angles | angles that add to 180 degrees together |
| Complementary angles | Angles that add to 90 degrees together |
| Skew lines | Lines in different planes that never cross |
| Intersecting lines | Lines that cross at one point |
| Parallel lines | Lines in the same plane that never cross |
| Perpendicular lines | Lines that cross at 90 degree angles |
| Equilateral triangle | A triangle with 3 equal sides |
| Scalene triangle | A triangle with 0 equal sides |
| Isosceles triangle | A triangle with exactly 2 equal sides |
| Rhombus | A quadrilateral with 4 equal sides |
| Square | A quadrilateral with 4 equal sides and 4 right angles |
| Trapezoid | A quadrilateral with exactly 2 parallel sides |
| Rectangle | A quadrilateral with two pairs of parallel sides and 4 right angles |
| Parallelogram | A quadrilateral with two pairs of parallel sides |
| Quadrilateral | A polygon with 4 sides |
| Triangle | A polygon with 3 sides |
| Pentagon | A polygon with 5 sides |
| Hexagon | A polygon with 6 sides |
| Octagon | A polygon with 8 sides |
| Polygon | A simple, closed, plane figure with at 3 or more straight sides |
| Translation | A movement of a figure along a straight line |
| Rotation | A movement of a figure around a point |
| Reflection | A movement of a figure in which the figure is “flipped” - the location and position changes |
| Line of symmetry | The line on a figure which divides the figure so that the two parts are “mirror” images of each other. If folded on this, both parts will match exactly. |
| Plane | A flat surface that extends without end in all directions |
| Geometry | The study of “Earth Measurement” involving shapes, angles, points, lines |
| Circle | a set of all points in a plane that are equal distance from a point called the center |
Created by:
lseman
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