Area and perimeter of triangle and parallelogram explained on a chalkboard

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Size: 5000px × 3500px
Photo credit: © PSL Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 2, area, blackboard, chalkboard, formula, key, ks2, math, mathematics, maths, parallelogram, perimeter, primary, school, stage, triangle