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SCALCET$9$M $12\mathrm{.}1\mathrm{.}004.$

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Consider the point.

$(1,3,6)$

What is the projection of the point on the $xy-$plane?

$(x,y,z)=1$

What is the projection of the point on the $yz-$plane?

What is the projection of the point on the $xz-$plane?

Draw a rectangular box with the origin and $(1,3,6)$ as opposite vertices and with its faces parallel to the coordinate planes. Label all vertices of the box.

Find the length of the diagonal of the box.

$x$