Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Geometry Term
geomtry terms
| Question | Answer |
|---|---|
| Acute triangle | A triangle in which all three angles are acute Examples: |
| Angle | A figure formed by two rays that have a common endpoint Example: |
| Chord | A line segment with its endpoints on a circle Example: |
| Circle | A closed plane figure with all points on the figure the same distance from the center Example: |
| Circumference | The distance around a circle Example: |
| Closed figure | A figure that begins and ends at the same point Examples: |
| Cone | A solid figure that has a circular base and one vertex Examples: |
| Congruent | Having the same size and shape Example: The triangles are congruent. |
| Congruent figures | Figures that have the same size and shape Example: The triangles are congruent. |
| Coordinate plane | A plane formed by two intersecting and perpendicular number lines called axes Example: |
| Coordinates | The numbers in an ordered pair Example: |
| Cube | A solid figure with six congruent square faces Examples: |
| Cylinder | A solid figure that has two parallel bases that are congruent circles Examples: |
| Degree (°) | A unit for measuring angles and temperature Examples: |
| Diameter | A line segment that passes through the center of a circle and has its endpoints on the circle Example: diameter |
| Dimension | A measure in one direction; the length, width, or height of a figure |
| Edge | The line segment where two faces of a solid figure meet Example: edge |
| Equilateral triangle | A triangle with three congruent sides Example: |
| Face | A polygon that is a flat surface of a solid figure Example: face |
| Figurate numbers | Numbers that can be represented by geometric figures Examples: |
| Hexagon | A polygon with six sides and six angles Examples: |
| Hypotenuse | In a right triangle, the side opposite the right angle; the longest side in a right triangle Example: hypotenuse |
| Intersecting lines | Lines that cross at exactly one point Example: Line EF intersects line GH. |
| Isosceles triangle | A triangle with two congruent sides Example: |
| Line | A straight path in a plane that goes on forever in opposite directions Example: line AB or line BA |
| Line segment | A part of a line that includes two points, called endpoints, and all of the points between them Example: line segment AB or line segment BA |
| Line symmetry | A figure has line symmetry if a line can separate the figure into two congruent parts Example: |
| Obtuse angle | An angle whose measure is greater than 90° and less than 180° Example: |
| Obtuse triangle | A triangle that has one obtuse angle Example: |
| Octagon | A polygon with eight sides Examples: |
| Ordered pair | A pair of numbersthe first number tells how far to move horizontally and the second number tells how far to move vertically |
| Parallel lines | Lines in a plane that never intersect Example: |
| Parallelogram | A quadrilateral whose opposite sides are parallel and congruent Examples: |
| Pentagon | A polygon with five sides Examples: |
| Perpendicular lines | Two lines that intersect to form four right angles Example: |
| pi (Noun) | The ratio of the circumference of a circle to its diameter An approximate decimal value of pi is 3.14. |
| Plane | A flat surface that extends without end in all directions Example: Planes are named by three points in the plane. |
| Plane figure | A figure which lies in a plane Examples: |
| Point | An exact location in space, usually represented by a dot Example: point A |
| Point symmetry | When a figure can be turned half way about a central point and still look the same Example: |
| Polygon | A closed plane figure formed by three or more line segments Examples: |
| Polyhedron | A solid figure with flat faces that are polygons Examples: |
| Prism | A solid figure that has two congruent, polygon-shaped bases, and other faces that are all rectangles Examples: rectangular prism triangular prism |
| Protractor | A tool used for measuring or drawing angles Example: |
| Pyramid | A solid figure with a polygon base and all other faces triangles that meet at a common vertex Example: This is a square pyramid |
| Quadrilateral | A polygon with four sides |
| Radius | A line segment with one endpoint at the center of a circle and the other endpoint on the circle Example: radius |
| Ray | A part of a line, with one endpoint, that continues without end in one direction Example: ray CD |
| Rectangle | A parallelogram with four right angles |
Created by:
17sncollins
Popular Math sets