11. The tangent at a point on a curve is defined intuitively as the limiting position of secant line through the point. 12. As a point " q " approaches the origin from the right, the secant line always has slope 1. 13. He concluded that the area between the secant line and the curve is the area of triangle " ACE ". 14. No tangent line can be drawn through a point within a circle, since any such line must be a secant line . 15. If is positive, then is on the high part of the step, so the secant line from to has slope zero. 16. As a point " q " approaches the origin from the left, the secant line always has slope " 1. 17. The secant line is only an approximation to the behavior of the function at the point because it does not account for what happens between and. 18. Two distinct secant lines to the conic, say } } and } } determine four points on the conic ( ) that form a quadrangle. 19. A line through two points on a curve is called a " secant line ", so is the slope of the secant line between and. 20. A line through two points on a curve is called a " secant line ", so is the slope of the secant line between and.
