Find the sum $of$ the given vectors.

$a=($:$2,0,5$:$),b=($:$0,8,0$:$)$

Illustrate geometrically.

a starts $at(x,y,z)=(0,0,0)$ and ends $at(x,y,z)=().$

$b$ starts $at(x,y,z)=(,)$ and ends $at(x,y,z)=(,).$

$a+b$ starts $at(x,y,z)=(,|)$ and ends $at(x,y,z)=(,|).$