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### 39 Cards in this Set

• Front
• Back
 an exact location in space Point a line that goes on forever in one direction Ray a flat surface that continues infinitel in all directions. Plane part of a line with two end-points Line Segment a straight path that goes on forever in both directions Line lines that don't intersect and they aren't parallel because their on two different planes Skew Lines a point that seperates a line segement into two congruent lines Midpoint 90* Right Angle greater than 90* Obtuse Angle two lines with the same length Congruent Segents lines that never intersect Parallel Lines two lines that meet at a point Interesecting Lines less than 90* Acute Angle two angles whose sum is 180* Supplementary Angles two angles whose sum is 90* Complementary Angles a line that divides an angle into two congruent angles Bisecting Lines two lines that intersect to form 90* angles Perpendicular Lines angles inside a shape Interior Angles angles that are formed by extending the sides of a shape Exterior Angles 180* Straight Angles a line that intersects with another line Transversal Line two angles that are connected Adjacent Angles 2 sides are equal Isoceles Triangle 3 sides are equal Equilateral Triangle all sides are different Scalene Triangle all 3 angles are less than 90* Acute Triangle all 3 angles are more than 90* Obtuse Triangle one angle is 90* Right Triangle any 4 sided shape Quadrilateral both pairs of opposite sides are parallel Parallelogram a quadrilateral with 4 equal sides Rhombus has to have four 90* angles Rectangles 4 equal sides and four 90* angles Square a quadrilateral, 1 side is parallel Trapezoid 5 6 7 8 9 10 Pentagon Hexagon Heptagon Octagon Nonagon Decagon any number of sides, closed though Polygon all sides are equal (stop sign) Regular Polygon all sides aren't equal Irregular Polygon congruent angles perportional sides Similar Polygons