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Geometry Puzzle Project

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Across
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The point on a line segment that divides the segment into two congruent segments. Ex. A line with a point in the middle.
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A result that has been proved to be true (using facts that were already known). Ex. The Pythagorean ...
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A mathematical statement that appears to be true, but has not been proven yet. Ex. "I believe that this is true, but I have no proof yet."
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Two angles that add up to 180 degrees.
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Lines that cross exactly at one point. Ex. +
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A line that cuts a line segment into two equal parts at 90 degrees.
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Used to determine the distance two points. Ex. (AB)2 = (x2 - x1)2 + (y2 - y1)2
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A quadrilateral that has both pairs of opposite sides parallel to each other.
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Two lines in a plane that does not intersect or touch each other at any point. Ex. //
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A line or ray that that divides an angle into two congruent angles.
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An angle that is less than 90 degrees.
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A statement that is taken to be true without proof. Ex. Also known as an axiom.
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The intersection of the three medians of the triangle (each of them connecting a vertex with the midpoint of the opposite side).
Down
2
A polygon with five straight sides and five angles.
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Geometric objects that only have one location. Ex. We use coordinates to locate them.
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A flat shape with four sides.
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Two angles that add up to 90 degrees.
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A triangle that has two sides that are equal lengths.
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The angles opposite each other when two lines cross.
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Figures that have the same shape and same size.