Question

Determine if $EF=AB$ and $\widehat{EF}={50}^o$, find $\widehat{AB}$.

• A. ${50}^o$
• B. ${45}^o$
• C. ${35}^o$
• D. ${90}^o$

Answer 1

Answer: (A)

${50}^o$

In a circle, or congruent circles, congruent chords have congruent arcs.
$\widehat{EF}\cong \widehat{AB}={50}^o$