Solid Geometry is one of 9 topics in the Grade 12 Engineering Graphics and Design CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What is a right-regular solid?
A solid whose base is a regular polygon with all sides and angles equal, and whose axis is perpendicular to that base
Any solid with at least one flat surface
A solid that only has curved surfaces
A solid with no defined base shape
Answer: A solid whose base is a regular polygon with all sides and angles equal, and whose axis is perpendicular to that base — A right-regular solid has a base that is a regular polygon (equal sides and angles) with its axis perpendicular to that base.
Easy
2. What is the circular equivalent of a pyramid?
A cone
A cylinder
A prism
A sphere
Answer: A cone — A cone is the circular equivalent of a pyramid: a circular base narrowing to a single apex point, just as a pyramid narrows from a polygonal base to an apex.
Medium
3. Name the range of number of sides for right-regular prisms and pyramids covered in CAPS Grade 12 solid geometry (excluding 7 sides).
Answer: 3, 4, 5, 6 and 8 sides — CAPS Grade 12 solid geometry works with right-regular prisms and pyramids having 3, 4, 5, 6 or 8 sides only.
