Problem#$1($Standard Orthographic Projection$)$

In this activity, your ability to visualize and produce standard orthographic views will be developed.

Task:

Study the following drawings. Use construction lines, hidden lines, center$-$lines and object$-$profile lines, where applicable, to sketch the standard orthographic views based on the provided pictorial drawing. First two problems to be solved using third angle projection and last two problems using first angle projection convention.

$($Sketch it to me please $)$