Terms : Hide Images
| 1455200054 | Angle | Two rays with a common endpoint form this. The rays and vertex are used to name it. | 0 | |
| 1455200055 | vertex | - the common endpoint of the rays forming an angle | 1 | |
| 1455200056 | congruent angles | - angles that have the same measure | 2 | |
| 1455200057 | vertical angles | opposite angles formed by the intersection of two lines. They are congruent. | 3 | |
| 1455200058 | adjacent angle | angles that have the same vertex, share a common side, and do not overlap | 4 | |
| 1455200059 | complementary angles | two angles whose sum of their measures is 90° | 5 | |
| 1455200060 | supplementary angles | two angles whose sum of their measures is 180° | 6 | |
| 1455200061 | transversal | the third line formed when two parallel lines are intersected | 7 | |
| 1455200062 | alternate interior angles | angles that are on opposite sides of the transversal and inside the parallel lines | 8 | |
| 1455200063 | alternate exterior angles | angles that are on opposite sides of the transversal and outside the parallel lines | 9 | |
| 1455200064 | corresponding angles | angles in the same position on parallel lines in relation to a transversal | 10 | |
| 1459733947 | congruent segments | sides with the same length | 11 | |
| 1459733948 | scalene triangle | a triangle with no congruent sides | 12 | |
| 1459733949 | isosceles triangle | a triangle having at least two congruent sides | 13 | |
| 1459733950 | equilateral triangle | - a triangle having three congruent sides | 14 | |
| 1459733951 | quadrilateral | - a closed figure having four sides and four angles | 15 | |
| 1459733952 | parallelogram | a quadrilateral with opposite sides parallel and opposite sides congruent | 16 | |
| 1459733953 | rhombus | a parallelogram having four congruent sides | 17 | |
| 1459733954 | trapezoid | a quadrilateral with one pair of parallel sides | 18 | |
| 1459733955 | polygon | a simple closed figure formed by three or more straight line segments | 19 | |
| 1459733956 | pentagon | a polygon having 5 sides | 20 | |
| 1459733957 | hexagon | a polygon having 6 sides | 21 | |
| 1459733958 | heptagon | a polygon having 7 sides | 22 | |
| 1459733959 | octagon | a polygon having 8 sides | 23 | |
| 1459733960 | nonagon | a polygon having 9 sides | 24 | |
| 1459733961 | decagon | a polygon having 10 sides | 25 | |
| 1459733962 | equiangular | all angles are congruent | 26 | |
| 1459733963 | regular polygon | a polygon that has all sides congruent and all angles congruent | 27 |
