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23 Cards in this Set
- Front
- Back
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plane shape |
a shape on a flat surface that is formed by curves, line segments, or both |
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point |
an exact position or location |
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endpoints |
points that are used to show segments of lines |
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ray |
a part of a line, with one endpoint, that is straight and continues in one direction |
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line |
a straight path extending in both directions with no endpoints |
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line segment |
a part of a line that includes two endpoints and all the points between them |
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two-dimensional shape |
plane shapes that have length and width |
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closed shape |
a two-dimensional shape that begins and ends at the same point |
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open shape |
a shape that does not begin and end at the same point |
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angle |
a shape formed by two rays that share the same endpoint |
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vertex |
a shared endpoint |
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right angle |
an angle that forms a square corner |
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polygon |
a closed plane shape with straight sides |
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side |
each line segment in a polygon |
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triangle |
a polygon with 3 sides and 3 angles |
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quadrilateral |
a polygon with 4 sides and 4 angles |
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pentagon |
a polygon with 5 sides and 5 angles |
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hexagon |
a polygon with 6 sides and 6 angles |
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octagon |
a polygon with 8 sides and 8 angles |
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decagon |
a polygon with 10 sides and 10 angles |
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intersecting lines |
lines that cross or meet to form angles |
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perpendicular lines |
intersecting lines that cross or meet to form right angles |
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parallel lines |
lines that do no cross or meet, and are always the same distance apart, and do not form any angles |
