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Geometry Notecards (5th grade Math)

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created 6 years ago by mgort
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updated 6 years ago by mgort

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1

Acute Angle

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an angle that is less than 90 degrees

2

Obtuse Angle

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an angle that is between 90 and 180 degrees

3

Straight Angle

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an angle that is exactly 180 degrees

4

Right Angle

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an angle that is exactly 90 degrees

5

Ray

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a part of a line that begins at one point and extends forever in one direction.

6

Line

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a set of points that form a straight path. A line extends forever in both directions.

7

Angle

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is formed by two rays that share an endpoint or vertex

8

Complementary Angle

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two angles that add/sum to 90 degrees

9

Supplementary Angles

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two angles that add/sum to 180 degrees

10

Vertical/Opposite Angles

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pairs of opposite angles formed by intersecting lines

11

Congruent

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When 2 shapes are the same size AND the same shape

12

Line Symmetry

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a figure that can be folded in half so that the two parts match exactly