Geometry Ch., 1-5 Flashcards
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| 11567026 | acute | angle less than 90 degrees | 0 | |
| 11567027 | obtuse | angle greater than 90 degrees | 1 | |
| 11574139 | point | no size | 2 | |
| 11574140 | segment | has endpoints | 3 | |
| 11574141 | ray | has one endpoint | 4 | |
| 11574142 | line | goes on forever | 5 | |
| 11574143 | plane | flat surface | 6 | |
| 11574144 | collinear | three or more points in a line | 7 | |
| 11574145 | noncollinear | points that are not in the line | 8 | |
| 11574146 | coplanar | points in the same plane | 9 | |
| 11574147 | noncoplanar | points not in the same plane | 10 | |
| 11574148 | angle | two rays with a common endpoint | 11 | |
| 11574149 | right | equals 90 degrees | 12 | |
| 11574150 | straight line/angle | equals 180 degrees | 13 | |
| 11574151 | bisect | to cut in half | 14 | |
| 11574152 | congruent | measures are equal | 15 | |
| 11574153 | adjacent | next to | 16 | |
| 11574154 | complementary | sum of angles is 90 degrees | 17 | |
| 11575027 | supplementary | 2 angels sum is 180* | 18 | |
| 11584999 | linear pairs | adjacent angles that form a line | 19 | |
| 11585000 | vertical angles | Congruent angles that are opposite of each other. | 20 | |
| 11585001 | skew | Two line which never intercect and are not on the same plane | 21 | |
| 11585002 | parallel | lines that will never meet, no matter how long you stretch them (like railroad tracks!) | 22 | |
| 11585003 | perpendicular | lines that cross in a right angle (or a + sign) | 23 | |
| 11585004 | corresponding angles | Pairs of nonadjacent angles that lie on the same side of a transversal of 2 lines and in correspondiing positions.(congruent) | 24 | |
| 11585005 | alternate interior angles | angles between 2 lines and on opposite sides of a transversal (congruent) | 25 | |
| 11585006 | alternate exterior angles | Angles that lie outside a pair of lines and on opposite sides of a transversal (congruent) | 26 | |
| 11585007 | same side interior angles | 2 interior angles on the same side of the transversal (sum is 180) | 27 | |
| 11585008 | same side exterior angles | 2 exterior angles on the same side of the transversal (sum is 180) | 28 | |
| 11585009 | transversal | A line that intersects two or more lines. | 29 | |
| 11585010 | equilateral | triangle with three congruent sides | 30 | |
| 11585011 | isosceles | triangle with two congruent sides | 31 | |
| 11585012 | scalene | of a triangle having three sides of different lengths | 32 | |
| 11585013 | acute triangle | a triangle whose interior angles are all acute | 33 | |
| 11585014 | right triangle | a triangle with one right angle | 34 | |
| 11585015 | obtuse triangle | a triangle with one obtuse angle | 35 | |
| 11585016 | equiangular triangle | all angles in the triangle are congruent | 36 |