Primary school · TypeLab 2D
Swallowtail Pennant
Swallowtail Pennant: a composite plane figure made of a rectangle 7.6 × 4.8 cm, minus a triangle with base 4.8 cm and height 2.6 cm. It is a classic primary school geometry problem (“Frames & Cutouts”). The net area is 30.24 cm² and the total perimeter is 27.08 cm.
Certified measurements (1:1 scale)
- Net area
- 30.24 cm²
- Total perimeter
- 27.08 cm
- Bounding box
- 7.6 × 4.8 cm
- Basic shapes
- 2
Step-by-step decomposition
- 1.Baserectangle 7.6 × 4.8 cm36.48 cm²
- 2.−triangle with base 4.8 cm and height 2.6 cm6.24 cm²
Area of each basic shape before the Boolean composition.
How to find the area
Area formula: A = B·H − ½·H·p
Split the figure into basic shapes, find each area, add the joined parts and subtract the cut-outs: A = 36.48 − 6.24 = 30.24 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.
