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Aim

Aim. What are the formulas to find the measures of angles formed by tangents, secants, and chords?. Draw and define a tangent, secant, and a chord. VOCABULARY. TANGENT : a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point.

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Aim

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  1. Aim What are the formulas to find the measures of angles formed by tangents, secants, and chords? Draw and define a tangent, secant, and a chord.

  2. VOCABULARY • TANGENT: a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point • SECANT: a straight line that intersects a curve at two or more points • CHORD: geometric line segment whose endpoints both lie on the curve

  3. Tangent-Chord An angle formed by a tangent and a chord: a x

  4. Two Secant An angle formed by two secants: b a x

  5. Two Tangent An angle formed by two tangents: a b x

  6. Tangent-Secant An angle formed a tangent and a secant: b x a

  7. Two Chord b An angle formed by two chords: x a

  8. PRACTICE QUESTIONS 1. Find x x 4 20

  9. PRACTICE QUESTIONS 2. Find a a 60

  10. PRACTICE QUESTIONS Find b 3. b 80 70

  11. 4. Regents Question Pair Share Find: PT= PN= LR= RT=

  12. Tonight’s Homework In the Workbook: • Pg 502 #30 • Pg 492 #12 • Pg 488 # 33 • Pg 395 #22 • Pg 368 # 3, 4 HAVE FUN! :]

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