Geometry Vocabulary
All definitions can be found in the glossary of the Holt McDougal Mathematics Course 3 textbook
| transformation | image | translation | reflection |
| rotation | similar figures | corresponding | dilation |
| scale factor | line of symmetry | rotational symmetry | acute angle |
| right angle | obtuse angle | straight angle | complementary angles |
| supplementary angles | adjacent angles | vertical angles | congruent angles |
| parallel lines | perpendicular lines | transversal | alternate interior angles |
| alternate exterior angles | corresponding angles | Triangle Sum Theorem | acute triangle |
| right triangle | obtuse angle | equilateral triangle | scalene triangle |
| isosceles triangle | Triangle Inequality Theorem | polygon | regular polygon |
| square | rectangle | rhombus | parallelogram |
| trapezoid | quadrilaterals | hexagon | heptagon |
| octagon | nonagon | decagon | coordinate plane |
| x-axis | y-axis | origin | x-coordinate |
| y-coordinate | quadrant | Pythagorean Theorem | hypotenuse |
| leg | Distance Formula | midpoint | midpoint formula |
| correspondence | congruent figures |