πŸ”·

Grade 3 Math Β· World 9: Polygon Plaza Β· Level 81

Compare and Sort Polygons

Sort polygons by their properties.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

πŸ™‹ Pick a learner to save ⭐

What children learn in Level 81

  • A square has 4 right angles, so it is a rectangle too! It's a special rectangle with all 4 sides the same length.
  • A square has 4 sides the same length, so it is also a rhombus. But not every rhombus is a square: most have no right angles.
  • Every parallelogram has 2 pairs of parallel sides. A trapezoid needs at least 1 pair, so every parallelogram is a trapezoid too!
  • To sort shapes, ask a question about every one: does it have a right angle? Parallel sides? 4 equal sides?

Georgia's K-12 Mathematics Standards:

  • 3.GSR.6.2 β€” Classify, compare, and contrast polygons, with a focus on quadrilaterals, based on properties. Analyze specific 3-dimensional figures to identify and describe quadrilaterals as faces of these figures.

Browse all Pre-K to Grade 5 standards β†’