| A | B |
|---|
| acute angle | an angle whose measure is less than 90 degrees |
| acute triangle | a triangle with three acute angles |
| angle | a figure formed by two rays or line segments with a common endpoint |
| area | the amount of surface covered by a frigure measured in square units |
| cone | a solid figure with a curved base and a single vertex |
| congruent | exactly the same size and shape |
| cube | a solid figure that has 6 faces that are congruent squares |
| circumference | the distance around a circle |
| complementary angles | angles having a sum of 90 degrees |
| degree | a unit for measuring angles |
| diagonal | a line segment connecting two vertices that are not next to each other |
| diameter | a line sement from one side of a circle to the other through the center |
