| A | B |
|---|
| line | a continuous extend of length |
| rectangle | a quadrilateral with opposite sides parallel |
| equalateral triangle | a triangle with all sides equal |
| obtuse angle | an angle greater than 90 degrees |
| vertex | the intersection point of two sides |
| perpindicular lines | two lines that cross each other to form 90 degree angles |
| scalene triangle | a triangle having three none equal sides and angles |
| point | a part in space |
| right triangle | a triangle with one internal angle equal to 90 degrees |
| right angle | a 90 degree angle |
| pentagon | a pollygon with 5 sides and 5 angles |
| line segment | one part of a line |
| closed curve | a curve that is continuous with meeting end points |
| radius | a straight line extending from the center of a circle to the surface |
| hexagon | a six sided figure |
