Answer:
The answer is 50
Step-by-step explanation:
The sum of the angles of a pentagon is 540
Then
[tex](2x + 10) +( x + 10) +( 2x) +(x + 20) + (x + 10) = 540 \\ 7x + 50 = 540 \\ 7x = 490 \\ x = 70 \\ when \: the \: biggest \: angle \: is \: (2x + 10) \\ 2x + 10 = 2 \times 70 + 10 = 150[/tex]
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