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10-4 Inscribed Angles & Arcs. Inscribed Angles & Arcs. Inscribed angle : an angle whose vertex lies ON a circle and whose sides are chords of the circle (#7). Inscribed angle Theorem(#8). The measure of the inscribed angle is half the measure of the intercepted arc. .
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Inscribed Angles & Arcs • Inscribed angle: an angle whose vertex lies ON a circle and whose sides are chords of the circle (#7)
Inscribed angle Theorem(#8) • The measure of the inscribed angle is half the measure of the intercepted arc.
Right Angle Corollary(#10) • If an inscribed angle intercepts a semicircle, then the angle is a right angle
Arc-Intercept Corollary(#11) • If 2 inscribed angles intercept the same arc, then they have the same measure