Geometry CP Mrs. Mongold Lesson 10-5: Tangents Geometry CP Mrs. Mongold

Tangent: a line that shares only one point with a circle and is perpendicular to the radius or diameter at that point. Point of tangency: the point that a tangent shares with a circle Two lines that are tangent to the same circle and meet at a point, are congruent from that point to the points of tangency

Lines AC and AF are tangent to circle X at points B and E respectively Lines AC and AF are tangent to circle X at points B and E respectively -B and E are points of tangency C F E B A

Radius XB is perpendicular to tangent AC at the point of tangency

AE and AB are congruent because they are tangent to the same circle from the same point

Is LM a tangent? Justify.

Find x if WE is tangent to circle D

Find x

Find the perimeter of the triangle