|
 rhombus | A parallelogram with all sides the same length |
| rectangle | a parallelogram with four right angles |
| isosceles triangle | a triangle with two equal sides |
| face | A flat surface of a polyhedron |
| solid figure | a three-dimensional shape |
| edge | A line segment where two faces meet in a solid figure |
| parallelogram | A quadrilateral with two pairs of parallel sides |
| trapezoid | a quadrilateral with exactly one pair of parallel sides |
| square | A rectangle with all sides the same length. |
| volume | amount of space an object takes up |
| vertex | The common endpoint of an angle |
| cube | a three-dimensional shape with six square or rectangular sides |
| hexagon | a six-sided polygon |
| obtuse triangle | a triangle with one obtuse angle |
| right triangle | a triangle with one right angle |
| scalene triangle | a triangle with no two sides of equal length |
| equilateral triangle | a triangle with three equal sides |
| octagon | a polygon with eight sides |
| quadrilateral | A polygon with 4 sides |
| triangle | a three-sided polygon |
| pentagon | a polygon with 5 sides |
| regular polygon | a polygon with all sides and all angles equal |
| polygon | A closed plane figure made up of line segments |
| degrees | a unit for measuring angles |
| protractor | an instrument for drawing/measuring angles |
| straight angle | an angle that measures 180 degrees |
| obtuse angle | An angle more than 90 degrees |
| right angle | an angle that measures 90 degrees |
| angle | two rays with a common endpoint |
| acute angle | An angle less than 90 degrees |
| plane | An endless flat surface |
| line segment | part of a line with two endpoints |
| point | An exact location in space |
| intersecting lines | lines that cross at one point |
| ray | Part of a line that has one endpoint and extends forever in one direction. |
| line | A straight path of points that goes on forever in two directions |
| perpendicular lines | Two lines that intersect to form right angles |
| parallel lines | Lines in the same plane that do not intersect |
| acute triangle | a triangle with 3 acute angles |