waecmaths question:
Find the value of x in the diagram
Option A:
50o
Option B:
30o
Option C:
22o
Option D:
17o
waecmaths solution:
The total exterior angles is 360o\[\begin{align} & (2x)+(3x-54)+(5x)+(4x)+(3x)+(2x+10)+(x+64)={{360}^{\circ }} \\ & (20x)+{{20}^{\circ }}={{360}^{\circ }} \\ & {{(20x)}^{\circ }}={{340}^{\circ }} \\ & x=\frac{{{340}^{\circ }}}{20}={{17}^{\circ }} \\\end{align}\]
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