| A | B |
|---|
| These solids have flat faces | cube, rectangular prism, pyramid |
| These solids can roll | cone, sphere, cylinder |
| face | a flat surface of a solid |
| edge | a line segment where two faces of a solid meet |
| vertex | a point where two or more edges meet |
| plane figure | a figure that lies on a flat surface |
| polygon | a closed plane figure made of line segments |
| triangle has how many sides | 3 |
| a quadrilateral has how many sides | 4 |
| a pentagon has how many sides | 5 |
| a hexagon has how many sides | 6 |
| a octagon has how many sides | 8 |
| equilateral triangle | all sides are the same length |
| isosceles triangle | at least two sides are the same length |
| scalene triangle | no sides are the same length |
| angle | two rays with a common vertex |
| ray | part of a line having only one end point |
| quadrilateral | a polygon with 4 sides |
| parallelogram | there are tow pairs of opposite parallel sides |
| square | all sides are the same length, there are 4 right sides |
| rectangle | oposite sides are parallel and the same length, there are 4 right angles |
| rhombus | there are two pairs of parallel sides, all sides are the same length |
| trapezoid | there is only one pair of parallel sides |
| line of symmetry | line on which a figure can be folded so that both halves are congruent |
| diagonal | line segment, other than a side, connecting two vertices of a polygon |
| perimeter | the distance around a figure |
| area | number of square units needed to cover a figure |
| volume | number of cubic units needed to fill a solid |
| units for measuring volume | cubic unit, cubic centimeter, cubic inch |
| units for measuring area | square unit, square inch, square centimeter |
| What kind of angle has a square corner? | Right |
| What kind of angle is less than a right angle? | Acute |
| What kind of angle is greater than a right angle but less than a straight angle | Obtuse |
| What kind of angle is a straight line? | Straight |
| What kind of triangle has one right triangle? | Right Triangle |
| What kind of triangle has all acute angles? | Acute Triangle |
| What kind of angle has one obtuse angle? | Obtuse Triangle |
| Congruent | Having the same size and shape |
| Flip | To turn a figure over |
| Turn | To rotate a figure |
| Slide | To move a figure in one direction |
| Similar | Having the same shape, but not necessarily the same size |
| Line | A straight path that goes on forever in both directions |
| Line Segment | part of a line with two endpoints |
| point | a location in space |
| Intersecting lines | lines that cross at a point |
| Parallel lines | lines that never intersect |
| Perpendicular lines | lines that intersect at right angles |
