Question

23. Show that the tangent lines at the end points of a diameter of a circle are parallel.

Answer 1

Step-by-step explanation:

A tangent to a circle is a line that intersects the circle at only one point. Theorem 10.1: The tangent at any point of a circle is perpendicular to the radius through the point of contact. Theorem 10.2: The lengths of tangents drawn from an external point to a circle are

Answer 2

Step-by-step explanation:

by tangent property

angel DBO=90°

also angel FAO=90°

so,

DBO+FAO=90+90=180

by internal angel test

CD || EF