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Unit 1 Vocabulary

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Across
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The point that divides the segment into two congruent segments
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A straight path of points extending forever in both directions.
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Names a Location
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Having the same size and shape
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An angle that is exactly 180°
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A flat surface
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A pair of adjacent angles whose noncommon sides are opposite rays
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Two angles in the same plane with a common side and a common vertex, but no common interior points
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The sum of the angles equals 180°
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Part of a line consisting of two endpoints and all of the points between them
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The common endpoint of the two rays that form an angle
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An angle that is less than 90°
Down
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To divide a figure into two congruent parts
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A point at an end of a segment or ray
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An angle that is exactly 90°
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Two rays that have the same endpoint
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Nonadjacent angles formed by two intersecting lines
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An angle that is between 180° and 360°
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Points that lie on the same plane
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Part of a line that starts at an endpoint and extends forever in one direction
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The sum of the angles that equals 90°
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Formed by two rays that share the same endpoint
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An angle that is between 90° and 180°