$1.$ Figure $2$ is in the second octant.

$2.$ Graph both figures on graph paper at a scale you consider appropriate $($leave the scale indicated$)$ and also record all the coordinate points you used to graph the figures.

$3.$ Find and write the general equations of all the planes that are needed to form the two figures. Indicate the entire process. $($There may be portions of the figure that are formed by the same plane; you must explain these parts.$)$

$4.$ Find, if necessary, the equation of the cylindrical surface$($s$)$ that are part of the figure.

$5.$ Graph both figures in Geogebra $3$D