2.1 Plane Geometry

• Instruments used in drawing: set squares, drawing set, straight edges and pencils
• Layout of a drawing environment: drawing surface, margins and title block
• Construction of combined shapes applied in drawing

• identify instruments used in drawing
• explain the layout of a drawing environment
• construct combined shapes applied in drawing
• embrace the use of plane geometry in drawing

“How are combined shapes applied in day-to-day life?”

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1. Instruments used in drawing
   40 min · 1 practice tasks · quiz
   The four groups of Grade 8 drawing instruments: set squares, drawing set, straight edges and pencils, and why plane geometry needs them.
2. Set squares
   40 min · 1 practice tasks · quiz
   The 45-45-90 and 30-60-90 set squares, the angles they give, and how they sit on a T-square or straight edge.
3. Drawing set and straight edges
   40 min · 1 practice tasks · quiz
   Compasses, dividers and protractor from the drawing set, and T-square, ruler and board edge as straight edges for long true lines.
4. Pencils for drawing
   40 min · 1 practice tasks · quiz
   H, HB and B pencils for construction, lettering and outlines, and why a sharp point is part of the instrument, not a luxury.
5. Drawing paper layout and margins
   40 min · 1 practice tasks · quiz
   Setting up the drawing environment: board or surface, paper fixed flat, T-square, and an even margin border around the working space.
6. The title block
   40 min · 1 practice tasks · quiz
   What a title block (title page strip) contains, where it sits, and how to print it so a drawing can be named, dated, scaled and filed.
7. Combined shapes in drawing
   40 min · 1 practice tasks · quiz
   What a combined shape is, how simple plane figures join or cut, and where those outlines appear in Kenyan daily life.
8. Constructing combined shapes
   40 min · 1 practice tasks · quiz
   Using instruments on a laid-out sheet to construct a combined shape from light simple figures, then one dark outline, and embracing plane geometry in daily making.