Geometry Basics VocabularyVersion en ligne Basics of Geometry Vocabulary Matching par Catherine Rayno 1 Point 2 Line 3 Angle 4 Plane 5 Line Segment 6 Ray 7 Parallel Lines 8 Perpendicular Lines 9 Triangle 10 Quadrilateral 11 Right Triangle 12 Vertical Angles 13 Linear Pair of Angles A single spot in geometric space. Named with only one letter. Infinitely many points. Named by two letters with a double headed arrow over top. Two line segments joined together at a vertex. Named by three letters where the middle letter is the vertex. The order of the letters matters. A flat surface in geometry. Named by three letters in any order. A part of a line that connects two endpoints. Named with two letters with a line over top. One endpoint that has a line coming off of it in one direction. Named by two points with an arrow with only one head. Lines that will never intersect. Lines that have the same slopes. Lines that will intersect at a 90 degree angle. Slopes are opposite signs. Slopes are flipped fractions of one another. A shape with three sides. All angles add up to 180 degrees. Can be isosceles, scalene, or equilateral. A shape with four sides. All angles will add up to 360 degrees. Could be a parallelogram or a trapezoid. Will contain exactly one right angle. Has a hypoteneuse. Use the Pythagorean Theorem to find the length of missing sides. Angles that are across from each other but share a vertex. Angles that are congruent in measure. Angles whose bottom edges make a straight line. Angles are adjacent. Angles are supplementary.
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