Three angles of a quadrilateral are $21^\circ$, $ 66^\circ$, and $134^\circ$. How many degrees are in the measure of the fourth angle?
Question:
Three angles of a quadrilateral are $21^\circ$, $ 66^\circ$, and $134^\circ$. How many degrees are in the measure of the fourth angle?
Answer:
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139^\circ
Three angles of a quadrilateral are $21^\circ$, $ 66^\circ$, and $134^\circ$. How many degrees are in the measure of the fourth angle?
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