Primary school · TypeLab 2D
Geometric Pencil
Geometric Pencil: a composite plane figure made of a rectangle 2.6 × 6 cm, joined with a triangle with base 2.6 cm and height 2.8 cm, joined with a semicircle of radius 1.3 cm. It is a classic primary school geometry problem (“Additive Figures”). The net area is 21.89 cm² and the total perimeter is 22.26 cm.
Certified measurements (1:1 scale)
- Net area
- 21.89 cm²
- Total perimeter
- 22.26 cm
- Bounding box
- 2.6 × 10.1 cm
- Basic shapes
- 3
Step-by-step decomposition
- 1.Baserectangle 2.6 × 6 cm15.6 cm²
- 2.+triangle with base 2.6 cm and height 2.8 cm3.64 cm²
- 3.+semicircle of radius 1.3 cm2.65 cm²
Area of each basic shape before the Boolean composition.
How to find the area
Area formula: A = b·h + ½·b·h_p + ½·π·r²
Split the figure into basic shapes, find each area, add the joined parts and subtract the cut-outs: A = 15.6 + 3.64 + 2.65 = 21.89 cm².
Editable in PowerPoint & Office
The .PPTX file contains native DrawingML shapes: outlines, dimensions and labels stay separate objects you can recolor and edit in PowerPoint, Keynote and Google Slides. The .SVG file is pure vector art at 1:1 scale on an A4 sheet, ready for print, LaTeX and textbook layout.
