Lesson 3-7: Secants and Tangents and Angle Measure

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Lesson 3-7 Secants and Tangents and Angle Measure

• Mrs. Mongold
• Advanced Math Topics

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• Secant and Tangent
• Interior angle ½ intercepted arc
• Two Secants
• Interior angle ½ (sum of intercepted arcs)
• Two Secants
• Exterior angle ½ (far arc close arc)
• Two Tangents
• Exterior angle ½ (far arc close arc)

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2 Secants/chords Angle 1 ½ (arc AD arc
CB) Angle 2 ½ (arc AC arc DB)
B
2
1
A
D
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E
Secant ED intersects tangent FC at a point of
tangency (point F) Angle 1 ½ arc FE Angle 2
arc EA arc FB
1
F
B
A
2
C
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Find angle x
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Find angle x
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Find x (arc JK)
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Find angle RPS
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Find arc BD
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Find angle FGI
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Find arc BC
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Find x
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Find arc ZYX