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What is the value of x in the pentagon above?

What Is The Value Of X In The Pentagon Above class=

Sagot :

The sum of the interior angles of a pentagon is 540°.

We can use this information to find the value of x by adding the rest of the interior angles and then substracting them from 540°:

[tex]\begin{gathered} 90+90+100+105+x=540 \\ 385+x=540 \\ x=540-385 \\ x=155 \end{gathered}[/tex]

It means that the correct answer is b. 155.

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