theorem 12-1: if a line is tangent to a circle, then the line is perpendicular to the radius drawn...
DESCRIPTION
Example: ML and MN are tangent to O. Find the value of x. M L N O x The sum of the angles of a quadrilateral is x= x=360 0 x=63 0TRANSCRIPT
Theorem 12-1:
If a line is tangent to a circle, then the line is perpendicular
to the radius drawn to the point of tangency.
Point of tangencyA
BO
PABOP
Example:ML and MN are tangent to O. Find the value of x.
M
L
N
O 1170 x
The sum of the angles of a
quadrilateral is 3600
1170+900+900+x=3600
2970+x=3600
x=630
Theorem 12-1:
The two segments tangent to a circle from a point outside of the circle are congruent.
M
L
N
O
LMNM