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Definition
| An object measured in 1 direction (length) |
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| A part of a line with 2 endpoints |
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| A straight path on a plane, that goes on and on in 2 directions |
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| A part of a line with 1 endpoint that goes on and on in 1 direction |
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| 2 lines that are the same distance apart |
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| Lines that cross and meet at exactly 1 point |
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| Lines that cross or meet to form right angles |
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| Measures exactly 90 degrees; a "perfect corner" |
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| Smaller than a right angle ("a cute little angle") |
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| Larger or open wider than a right angle |
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| An object measured by length and width |
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| A figure that lies on a plane; flat; 2D |
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| A curved plane figure with each point on the curved line being the same distance from its center point |
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| A closed plane (flat) figure with straight sides |
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| The point where 2 line segments meet in 2D objects, or where 3 faces meet in 3D objects |
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Definition
| A polygon with 3 sides, angles and vertices |
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| Any polygon with 4 sides and 4 angles; There are 6 types: square, rectangle, papallelogram, rhombus, trapezoid and a general quadrilateral |
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Definition
| A polygon with 4 congruent sides and 4 right angles; its opposite sides are parallel and congruent |
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Definition
| A polygon with 4 right angles, whose opposite sides are parallel and congruent |
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Definition
| A polygon whose opposite sides are parallel and congruent (2 pairs of parallel sides) |
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| A parallelogram whose 4 sides and opposite angles are congruent |
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Definition
| A quadrilateral with only 1 pair of parallel sides |
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| A polygon with 5 sides, angles and vertices |
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| A polygon with 6 sides, angles and vertices |
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| A polygon with 8 sides, angles and vertices |
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Term
| Symmetry/Lines of Symmetry |
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Definition
| A figure has a line of symmetry if it can be folded where the one half is an exact fit on top of the other; a square has 4 lines of symmetry |
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| The movement of any shape in geometry; 3 types: reflection, translation, rotation |
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| When 1 shape makes the mirror image of another shape; flip |
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| When 1 shape slides into another position; slide |
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| When 1 shape turns around a point; turn |
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| Measured in 3 directions: length, width and height |
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Definition
| A 3D object with 1 curved surface |
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| The flat surfaces that makes up a 3D figure |
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| The line segment where 2 faces meet |
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| A 3D object with 6 congruent square faces |
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| A 3D object with 6 rectangular faces |
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| A 3D object with 2 triangular and 3 rectangular faces |
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Definition
| "Spear-a-mid" 3 types: square, rectangular, triangular |
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Definition
| Has 2 flat faces and 1 curved surface; examples: tissue rolls, cans |
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Definition
| Has 1 flat surface and 1 curved surface; examples: party hats, ice cream cones |
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