Question

Three angles of a quadrilateral are 100°, 50° and 50° respectively. Find the measure of the fourth angle.

Answer 1

Dear Student,

$$\begin{gathered} Letthefourthangle=x° \\ Then,thesumofalltheanglesinaquadrilateral=360° \\ 100°+50°+50°+x°=360° \\ x°=360°-200° \\ x=160° \\ Hence,thefourthangleofthequadrilateralis160°. \end{gathered}$$

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