Across
- 4. 3.141592
- 7. a triangle with a right angle
- 8. the trigonometric function that for an acute angle is the ratio between the leg opposite the angle when it is considered part of a right triangle and the hypotenuse
- 9. a round plane figure that consists of points from a fixed point
- 11. a unit of measurement of angles
Down
- 1. when an angle is on the coordinate plane with the vertex
- 2. a circle with a radius of one unit
- 3. a straight line
- 5. four quarters of a circle
- 6. plane angular measurement that's equal to the angle at the center
- 9. the trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.
- 10. a straight line from the center of the circle