ZIMSEC · Form 1 · Syllabus 4057
Technical Graphics and Design
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- Drawing equipment, lines and lettering Drawing board and T-square (or a parallel motion board), set squares (45° and 30°/60°), protractor, compasses and dividers, scale rule, pencils (2H for construction lines, HB for outlines and lettering), eraser and templates.
- Geometrical constructions Inscribed circle of a triangle: centre where the angle bisectors meet. Circumscribed circle: centre where the perpendicular bisectors of the sides meet.
- Pictorial drawing: isometric and oblique Pictorial drawings show an object in three dimensions in a single view.