In the figure AB= BC=CD=DE=AE. <C=<D=90°. what is the measure of <A? A108⁰B90⁰C140⁰D120⁰Answer: D. 120⁰ Read Explanation: The sum o interior angles of a polygon is given by=(n−2)×180°=(n-2)\times 180^{\degree}=(n−2)×180°=3×180°=540°=3\times 180^{\degree}=540^{\degree}=3×180°=540°180°+3x=540°180^{\degree}+3x=540^{\degree}180°+3x=540°3x=540°−180°3x=540^{\degree}-180^{\degree}3x=540°−180°3x=360°3x=360^{\degree}3x=360°x=3603=120°x=\frac{360}{3}=120^{\degree}x=3360=120° Read more in App
