Geometry Vocabulary

3. When two figures have the same angles and proportional side lengths, they are ____.
7. This pair of angles are congruent because they are reflections across intersecting lines.
8. This is a transformation that causes a figure to flip over an axis.
9. The tangent function is the ratio of the opposite side of an angle to the angle's ____ side.
12. When two figures have the same angles and side lengths, they are ____.
15. This is a transformation that creates similar figures.
16. This trig function represents the ratio of the side opposite an angle to the hypotenuse.
17. This type of arc travels more than halfway around the circle.
19. This shape represents the set of all points equidistant from a central point.
20. This is the distance from the center to the edge of a circle.
23. When you rotate a semicircle around its diameter, you create this shape.
24. When you rotate a right triangle around one leg, you create this shape.
25. If two lines have equal slopes, they are ____.
27. This line or line segment creates a 90 degree angle with the radius of a circle.
29. The ____ of a cone is 1/3 that of a cylinder with the same height and base.
30. This type of arc travels less than halfway around the circle.
31. This line segment is a chord that passes through the center of a circle.

1. This is a way of representing central angle measure as a ratio of the arc length to the radius.
2. When you rotate a rectangle around one of its sides, you create this shape.
4. This type of angle will have the same degree measure as its intercepted arc.
5. One definition for this constant is the radian equivalent of 180 degrees.
6. One side of a 3D figure is called a ____.
8. This is a transformation in which a figure changes direction according to an angle.
10. This trig function represents the ratio of the side adjacent to an angle to the hypotenuse.
11. This type of angle will be equal to 1/2 the measure of the intercepted arc.
13. This is a transformation in which a figure slides from one place to another.
14. If two lines have opposite reciprocal slopes, they are ____.
18. In a hexagonal prism, each ____ is a hexagon.
21. When angles add up to 180 degrees, they are ____.
22. This line segment connects to two points on the edge of a circle.
26. When solving for a side with the Pythagorean Theorem, the last step is to take a square ____.
28. In the Pythagorean Theorem, the sum of the squares of the legs of a right triangle is equal to the square of the ____.