An inscribed angle is measured by one-half its intercepted arc. Angle A = 90° which is one-half its intercepted arc KQL. So arc KQL = 180° which is a semicircle, since a whole circle is 360°, twice 180°. Therefore KL is a ________? If you need for me to tell you, say so in the thank-you note form below and I'll get back to you by email. Edwin