Math Geometry Vocab Quiz Directions: Match the definition with the vocabulary word. Write the matching number on the line beside the word and connect them with a line. ___ polygon 1. A rectangle with all sides the same length. 2. An angle whose measure is exactly 180 degrees. ___ vertex 3. A triangle who angles are all acute angles. ___ triangle 4. A quadrilateral that has exactly one pair of parallel sides.. ___ quadrilateral 5. An angle whose measure is between 0 and 90 degrees. ___ pentagon 6. A triangle in which one angle is an obtuse angle. ___ parallelogram 7. Two rays that have the same endpoint. ___ square 8. A triangle in which one angle is a right angle. ___ hexagon 9. A triangle with two sides of the same length. ___ acute triangle 10. An angle whose measure is exactly 90 degrees. ___ right triangle 11. A triangle whose sides all have the same length. ___ obtuse triangle 12. An instrument used to measure and draw angles. ___ isosceles triangle 13. A triangle in which no sides have the same length.. 14. An angle whose measure is between 90 and 180 degrees. ___ scalene triangle 15. A closed plane figure made up of line segments. ___ equilateral triangle 16. A polygon with 4 sides. ___ protractor 17. A parallelogram with four right angles. ___ angle 18. A parallelogram with all sides the same length. ___ obtuse angle 19. The common end point of the two rays in an angle. ___ acute angle 20. A polygon with 6 sides. ___ straight angle 21. A polygon with 3 sides. ___right angle 22. A quadrilateral with both pairs of opposite sides parallel. ___rectangle 23. Polygon with 8 sides. ___octagon 24. A polygon with 5 sides. ___rhombus ___trapezoid