828671
Description
Flashcards by Lynn Rathbun, updated more than 1 year ago
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Created by Lynn Rathbun
about 10 years ago
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| Question | Answer |
| open plane figure | |
| open plane figure | A plane figure that does not start and end at the same point. |
| closed plane figure | A plane figure that starts and ends at the same point. |
| closed plane figure | |
| plane figures | Plane figures are flat figures. They have length and width. They may be open or closed figures. |
| vertex, vertices | A point where two sides of a polygon meet. |
| quadrilaterals | Polygons with 4 sides and 4 angles. |
| parallelogram | A quadrilateral with two opposite sides that are parallel. Only the opposites sides of a parallelogram need to be equal. |
| parallelogram | |
| rhombus | A parallelogram with sides that are equal in length. |
| rhombus | |
| trapeziod | A closed plane figure in which only one pair of opposite sides are parallel. |
| trapezoid |
Image:
Trapezoid__PSF_ (image/png)
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| congruent | Identical figures are congruent. They have the same shape and same size. |
| congruent | |
| slide | Move a figure in any direction to a new position. |
| slide |
Image:
slide (image/jpg)
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| flip | Turn a shape front to back over a line. |
| flip |
Image:
flip (image/png)
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| turn | Rotate a figure about a point. |
| turn |
Image:
flip (image/png)
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| not congruent | Two figures that are either not the same shape or not the same size. |
| symmetry | Occurs when two halves of a figure fit each other exactly when folded along a line. Two halves are mirror images of each other. |
| line of symmetry | A line that divides a figure into congruent halves. The halves fit exactly over each other when folded along this line. |
| line of symmetry | |
| symmetry |
Image:
symmetry1 (image/jpg)
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