Grade 6 · Measurement
Perimeter of Complex Shapes
A complex shape is made of simpler shapes joined together. Finding its perimeter means adding all the outer edges — sometimes you need to figure out missing side lengths by decomposing the shape or using what you already know.
LESSON VIDEO
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Lesson video
A short walkthrough to play in class or assign for flipped/at-home viewing.
WHAT STUDENTS WILL LEARN
✓Calculate perimeter of complex shapes (composed of rectangles and other shapes)
✓Decompose complex shapes into simpler shapes
✓Use perimeter in real-world contexts
✓Estimate and measure perimeter accurately