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A point is a location that has no size and you name it by a capital letter |
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A series of points that extend in opposite directions without end. You name a line by any two points of the line. |
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A part of a line with one endpoint, all the points of the line on one side of the endpoint. You name a ray using two points, starting with the endpoint. |
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Part of a line with two endpoints, and all the endpoints in between. You name a segment by its endpoints. |
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A flat surface that extends indefinitely in all direction, and has no thickness. |
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Definition of intersecting lines |
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Lines that cross at one point, and only one point. (in the same plane) |
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Definition of parallel lines |
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Lines in the same plane that never intersect. (parallel segments and rays lie in parallel lines.) |
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They are neither parallel nor intersecting. They are in different planes. |
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A figure formed by two rays with a common endpoint. |
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The point of intersecting of two sides of an angle or figure. (plural vertices) |
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Definition of right angle |
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Exactly 90˚ (Put a square in them...ALWAYS) |
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Definition of acute angle |
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Definition of obtuse angle |
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Bigger than 90˚ (less than 180˚) |
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Definition of a straight angle |
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Exactly 180˚ (a straight line) |
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Definition of complementary angles |
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Angles add up to 90˚ (15˚ + 75˚) |
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Definition of supplementary angles |
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Angles add up to 180˚ (115˚ + 65˚) |
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Definition of congruent angles |
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Two angles with the same measure. |
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Definition of adjacent angles |
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Share a vertex and a side but have no interior points in common. |
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Definition of vertical angles |
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Formed by to intersecting lines and are opposite of each other. |
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Adjacent:Next to Vertical: ________ |
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You name a line by any two points of the line. (capital, unless only 1 letter[lowercase]) Put a line with then ends on top, uless 1 letter than line x) <---> .......................................................LD |
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What is another name for vertex? |
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What do you always put in a right angle? |
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How do you name an angle? |
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With the 3 points, the vertex in the middle. |
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The point that starts/ends a ray or segment. |
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How do you name a line segment |
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