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04-03-2021
Mathematics

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HELP: find the measure of the arc or angle indicated, assume that lines which appear tangent are tangent

HELP find the measure of the arc or angle indicated assume that lines which appear tangent are tangent class=

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mhanifa mhanifa

05-03-2021

Answer:

3) B. 65°
4) D. 120°

Step-by-step explanation:

Question 3

Angle formed outside is half of the difference of intercepted arcs

m∠F = 1/2(( 360° - 115°) - 115°) = 1/2(130°) = 65°

Correct choice is B

Question 4

Angle formed by two chords is half of the sum of intercepted arcs

m∠WTU = 1/2(105° + 135°) = 1/2(240°) = 120°

Correct choice is D

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