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Lesson 10.2. Congruent Chords. If two chords are the same distance from the center of a circle, what can we conclude?. Theorem 77: If two chords of a circle are equidistant from the center, then they are congruent. Theorem 78:
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Lesson 10.2 Congruent Chords
If two chords are the same distance from the center of a circle, what can we conclude? Theorem 77: If two chords of a circle are equidistant from the center, then they are congruent.
Theorem 78: If two chords of a circle are congruent, then they are equidistant from the center of the circle.
Given: Circle O, AB CD, OP = 12x – 5, OQ = 4x + 19 Find: OP Since AB CD, OP = OQ 12x – 5 = 4x + 19 x = 3 Thus, OP = 12(3) – 5 = 31
Given • Given • An isosceles Δ has two sides. • If 2 chords of a circle are , then they are equidistant from the center. • A Δwith two sides is isosceles. • Circle P, PQ AB, PR CB • ΔABC is isosceles, with base AC. • AB BC • PQ PR • ΔPQR is isosceles