hsanotes.com notes – short, clear, exam-focused – help score 90+ marks in Punjab board exams.
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- Short definitions
- Step-by-step solutions
- Tricks & aids
- PCTB / PECTAA alignment
- Similar figures simplified
- Past paper questions
- Revision format
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For Punjab boards (Lahore, Gujranwala, Rawalpindi, Faisalabad, Bahawalpur, Multan, Sargodha, Sahiwal, DG Khan) and top schools: The City School, Beaconhouse, Roots International, Lahore Grammar School (LGS), Karachi Grammar School, Froebel’s, The Educators, Army Public School (APS), Divisional Public School, Government Model School.
Exercise 9.1 – Similar Solids/Triangles (Q1-3)
- Solids (3,4,5) & (4.5,6,7.5): Ratios 1.5 → Similar (scale 1.5)
- Triangles ABC (6,9,12) ~ DEF (10.5,15.75,21): Ratios 2:3:4 → Similar
- △ABC ~ △DEF, AB=12, AC=20, BC=16, DE=6: Scale 1/2 → DF=10 cm, EF=8 cm
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