## Instructions

1.Adjust the radius position by dragging points C and B, what do you observe?.

2.By adjusting the position of C or D ,distance from external point increases or decreases , does the length of CD and DB remains same ?

OBSERVATIONS:

-C will always be perpendicular to tangent DC and B will always be perpendicular to tangent DB.

-The length of segment DC will always equal the length of segment DB.