Question 1: Define isometric drawing in your own words.

Answer: Isometric drawing is a method of representing three-dimensional objects on a two-dimensional surface, where the three axes are equally angled at 120 degrees, allowing dimensions to be measured directly.

Question 2: Describe the main difference between isometric and perspective drawing.

Answer: In isometric drawing, the scale along each axis is the same, and the object is shown without vanishing points, giving a clear view of all dimensions. Perspective drawing uses vanishing points, making objects appear smaller as they recede into the distance.

Question 3: Sketch a simple cube in isometric projection in the space provided. Ensure the edges are drawn with the correct 30-degree angles.

Answer: A correct sketch of a cube in isometric projection should be a six-faced shape with all edges parallel to the three axes, with the top face a rhombus and all sides equal, with edges at 30 degrees to the horizontal.

Question 4: Draw a rectangular prism in isometric view. Label the length, width, and height in your sketch.

Answer: The sketch should show a three-dimensional rectangular box with the three principal dimensions clearly indicated, with all vertical and horizontal edges parallel to the isometric axes.

Question 5: Sketch an isometric drawing of a triangular-based pyramid. Show all edges clearly.

Answer: The correct sketch should depict a pyramid with a triangular base, with the apex connected to each corner of the triangle, all in isometric projection with proper angles.

Question 6: List three common mistakes made when drawing in isometric projection and how to avoid them.

Answer: 1. Using incorrect angles (not 30 degrees); avoid by using a protractor or set square. 2. Making edges uneven; ensure all edges are straight and parallel where needed. 3. Confusing the axes; remember that all three axes are equally spaced at 120 degrees.

Question 7: Explain why isometric drawings are useful in design and engineering.

Answer: They allow designers and engineers to see all sides of an object clearly, measure dimensions directly, and visualize complex shapes accurately without perspective distortion.

Question 8: Sketch a simple isometric drawing of a house with a pitched roof, door, and windows. Use the space provided.

Answer: The drawing should show a rectangular base with a triangular roof, a door on the front face, and windows on the walls, all aligned with isometric axes.

Question 9: Describe the steps you would take to draw a cylinder in isometric projection.

Answer: Start by drawing two ellipses for the top and bottom faces, parallel to each other. Connect the edges with straight lines to form the sides, keeping in mind the isometric angles.

Question 10: Design a simple keyring using isometric drawing. Sketch your design in the space provided.

Answer: A correct design would include a ring shape with a small rectangular or circular clasp, all drawn with isometric lines showing depth and perspective.

Question 11: Identify and explain the importance of the 30-degree angles in isometric drawing.

Answer: The 30-degree angles ensure that the three axes are equally inclined, which maintains the proportionality and clarity of the isometric projection, making the drawing accurate and easy to interpret.