| A | B |
|---|
| triangle | a 3 sided closed figure |
| circle | the set of all points in a plane at a given distance from center |
| chord | a segment joining two points on a circle |
| radius | a segment joining the center of the circle to a point on the circle |
| diameter | a chord passing through the center of the circle |
| acute triangle | composed of 3 acute angles |
| right triangle | composed of 1 right angle |
| obtuse triangle | composed of 1 obtuse angle |
| scalene triangle | no side congruent |
| isosceles triangle | two congruent sides |
| equilateral triangle | all 3 sides congruent |
| circumference | the distance around a circle |
