Chords DE, EF, and FG are congruent. Determine the following measures. m = ° m∠ECF = °
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arc FG = 67
angle ECF = 67
This is true because the chord lengths are equal
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Given : Chords DE, EF, and FG are congruent.
To find : m∠ECF =
Solution:
Chord DE , EF & FG are congruent.
=> DE = EF = FG
Equal chord subtend equal angle at center
=> ∠FCG = ∠DCE = ∠ECF
m ∠DCE = 67° given
=> m ∠ECF = 67°
m ∠ECF = 67°
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