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# 2013 Revised GRE exam Math Flashcards Sample (Geometry Terms)

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### 2013 Revised GRE exam Math Flashcards Sample (Geometry Terms)

1. 1. acute angle 1a
2. 2. an angle with a measure greater than 0 degreesand less than 90 degrees 1b
3. 3. acute triangle 2a
4. 4. triangle whose interior angles are all acute 2b
6. 6. angles that share a vertex and a side buthave no interior points in common 3b
7. 7. alternate interior angles 4a
8. 8. angles that lie within a pair of lines and on opposite sides of a transversal 4b
9. 9. angle 5a
10. 10. two rays with a common endpoint 5b
11. 11. arc 6a
12. 12. a curved line or segment of a circle 6b
13. 13. area 7a
14. 14. the number of thesquare units in a figure 7b
15. 15. base 8a
16. 16. the bottom side of a geometric figure from which the altitude orheight can be constructed 8b
17. 17. circle 9a
18. 18. the set of all points in aplane that are the same distance from a given point 9b
19. 19. circumference 10a
20. 20. the distance around a circle 10b
21. 21. circumference 11a
22. 22. the distance around the edge of a circle 11b
23. 23. complementary angle 12a
24. 24. if the sum of two angles measures 90 degrees 12b
25. 25. cone 13a
26. 26. a 3-D figure with curvedsurfaces, a circular base, and one vertex 13b
27. 27. congruent figures 14a
28. 28. figures that are the same size and shape 14b
29. 29. corresponding angles 15a
30. 30. angles that lie on the same side of a transversal and incorresponding positions 15b
31. 31. cylinder 16a
32. 32. a 3-D figure with ll curvedsurfaces, two circular bases,and no vertex; the net of acylinder is formed by twocircles and one rectangle 16b
33. 33. decagon 17a
34. 34. a polygon with ten sides 17b
35. 35. diameter 18a
36. 36. the distance across thecircle through the center 18b
37. 37. difference 19a
38. 38. the answer to asubtraction problem 19b
39. 39. dodecagon 20a
40. 40. a 12 sided polygon 20b
41. 41. each exterior angle of a regular polygon 21a
42. 42. 360 divided by (# of sides) 21b
43. 43. each interior angle of a regular polygon 22a
44. 44. 180 - (exterior angle measure) 22b
45. 45. edges 23a
46. 46. the intersection of faces of a 3-D figure 23b
47. 47. equilateral 24a
48. 48. means that all sides are equal 24b
49. 49. equilateral triangle 25a
50. 50. a triangle with three congruent sides 25b
51. 51. faces 26a
52. 52. the flat surfaces of a 3-D figure 26b
53. 53. height of a figure 27a
54. 54. the perpendicular distancefrom the base to the oppositeside of the figure (alwaysforms a right angle with thebase); also called the altitude 27b
55. 55. heptagon 28a
56. 56. a polygon with seven sides 28b
57. 57. hexagon 29a
58. 58. a polygon with six sides 29b
59. 59. horizontal 30a
60. 60. lines going side to side 30b
61. 61. intersecting lines 31a
62. 62. two or more lines thatmeet and cross at any angle. 31b
63. 63. isosceles triangle 32a
64. 64. a triangle with two equal sides, the two base angles are also equal 32b
65. 65. lateral area 33a
66. 66. the sum of the areas ofthe lateral surfaces (only the sides, no bases) of a 3-D figure 33b
67. 67. line 34a
68. 68. a series of dots so closetogether that they appearas one continuous thing; there is no beginning or end to a "line". 34b
69. 69. line segment 35a
70. 70. two endpoints and the straight path between them; a "line" with abeginning and an ending. 35b
71. 71. measure of the interior angles of a triangle 36a
72. 72. 180 degrees 36b
73. 73. net 37a
74. 74. A two-dimensional patternthat can be folded to makea three-dimensional prism or pyramid 37b
75. 75. nonagon 38a
76. 76. a polygon with nine sides 38b
77. 77. obtuse angle 39a
78. 78. an angle that measuresgreater than 90 degrees and less than 180 degrees 39b
79. 79. obtuse triangle 40a
80. 80. triangle that has one angle more than 90 degrees 40b
81. 81. octagon 41a
82. 82. a polygon with eight sides 41b
83. 83. parallel lines 42a
84. 84. lines going in the same directionwithout touching; two lines (orline segments) with the sameslope that are always the samedistance apart. 42b
85. 85. parallelogram 43a
86. 86. a quadrilateral that has both pairs of opposite sides parallel 43b
87. 87. pentagon 44a
88. 88. a polygon with five sides 44b
89. 89. perimeter 45a
90. 90. the distance around any closed figure 45b
91. 91. perpendicular lines 46a
92. 92. lines that intersect at a right angle 46b
93. 93. pi 47a
94. 94. The value that shows therelationship of a circlescircumference to its diameter;it has an approximate value of3.14 or the fraction 22/7 47b
95. 95. plane 48a
96. 96. is a flat two-dimensionalsurface that is unending in all directions 48b
97. 97. polygon 49a
98. 98. a closed figure withthree or more straight sides 49b
99. 99. prism 50a
100. 100. a 3-D figure that has two paralleland congruent bases in the shapeof a polygon and at least threelateral faces shaped like rectangles;has a first name (after base) andlast name is prism 50b
101. 101. product 51a
102. 102. the answer to amultiplication problem 51b
103. 103. pyramid 52a
104. 104. a solid figure that has apolygon for a base andtriangles for sides; has afirst name (after base) andlast name is pyramid 52b
106. 106. a polygon with four sides 53b
107. 107. quotient 54a
108. 108. the answer to a division problem 54b
110. 110. the distance from thecenter of the circle toany given point on the circle 55b
111. 111. ray 56a
112. 112. a part of a line thatextends indefinitely from one direction 56b
113. 113. rectangle 57a
114. 114. a quadrilateral with four right angles; opposite sides are parallel and congruent 57b
115. 115. reflex angle 58a
116. 116. angle that measuresmore than 180 degrees and less than 360 degrees 58b
117. 117. regular figure 59a
118. 118. a figure in which allsides are equal in lengthand all angles are of the same measure 59b
119. 119. rhombus 60a
120. 120. a parallelogram with four equal sides 60b
121. 121. rhombus 61a
122. 122. has four equal sides 61b
123. 123. right angle 62a
124. 124. an angle that measures 90 degrees 62b
125. 125. right triangle 63a
126. 126. a triangle with one right angle 63b
127. 127. scalene triangle 64a
128. 128. all sides are different 64b
129. 129. solid 65a
130. 130. a three-dimensional (3- D) figure 65b
131. 131. square 66a
132. 132. a parallelogram with allsides congruent and all angles congruent 66b
133. 133. straight angle 67a
134. 134. 180 degree angle 67b
135. 135. sum 68a
137. 137. sum of the exteriorangles of a polygon 69a
138. 138. ALWAYS 360 degrees 69b
139. 139. sum of the interiorangles of a polygon 70a
140. 140. (n-2)180 ; with n as the number of sides in the figure 70b
141. 141. supplementary angle 71a
142. 142. if the sum of two angles measure 180 degrees 71b
143. 143. surface area 72a
144. 144. the sum of the areas ofall the faces and bases ofa solid figure; measured in square units 72b
145. 145. transversal 73a
146. 146. a line that intersects two or more other lines at different points 73b
147. 147. trapezoid 74a
148. 148. a quadrilateral having two sides parallel 74b
149. 149. two ways to measure triangles 75a
150. 150. side length and angle measures 75b
151. 151. vertical 76a
152. 152. line going up and down 76b
153. 153. vertical angles 77a
154. 154. angles that are oppositefrom each other; formed from two intersecting lines 77b
155. 155. volume 78a
156. 156. the amount of space a 3- D figure containes; thenumber of cubic units in a 3-D figure. 78b