Use isometric dot paper and make an isometric sketch for the given shape.

Hint: In this question we use the concept of solid geometry is the geometry of $3D$ shapes or solid shapes. The reason it is called Solid Geometry or $3D$ geometry is because it has three dimensions: Length, Width and Height.

Complete step-by-step answer:

In an isometric sketch, the image of the object is drawn in such a manner that the original dimension of the object is intact irrespective of its position.

According to question, the isometric sketch of the above figure is :



Note: In such questions it is advisable to remember the basic concepts because while making sketches the concept will only help and saves a lot of time. Isometric Sketching or isometric drawing is a pictorial representation of an object in which all the three-dimensions are drawn at the full scale. It looks like an isometric projection. In this case, all the lines parallel to its major axes are measurable.