Question

Can you help me on what 6x equals? (Grade 10, angles)

Answer 1

First we need to find the value of x, we can use the fact that the sum of the interior angles of a quadrilateral is 360°

$6x+6x+9x+9x=360$$\begin{gathered} 30x=360 \\ \end{gathered}$

then we isolate the x

$x=\frac{360}{30}$

$x=12$

then for 9x and 6x, we substitute the value of x=12

$6(12)=72$$9(12)=108^{}$

if x =12, therefore, the angle 6x=72° and the 9x=108°