Answer
$x=4$ units
$A=90^{\circ},B=60^{\circ}$ and $C=30^{\circ}$
Work Step by Step
Similar triangles have their corresponding angles equal.
Hence, $A=90^{\circ},B=60^{\circ}$ and $C=30^{\circ}$.
The corresponding sides are proportional, thus:
$\dfrac{x}{2} = \dfrac{8}{4}$
Simplify.
$\dfrac{x}{2} = 2$
Multiply both sides by $2$.
$x = 4$
Hence, the missing length is $4$ units and the missing angles are $A=90^{\circ},B=60^{\circ}$ and $C=30^{\circ}$.
