Grade 6 · Unit 5Topic 2 of 3~13 min

Composite Figures

Split unusual shapes into simple ones you already know.

Step 1 · Learn

Walkthrough

Read this first — it covers the idea in plain language with a worked example.

A composite figure is made of simpler shapes joined together. Split it into rectangles and triangles, find each area, then add them up.

If a shape has a piece cut out (like a picture frame), find the outer area and subtract the inner area.

Worked example

An L-shape is an 8 × 6 rectangle with a 3 × 2 corner cut out. Find the area.

Tip

Sketch the figure and label every length before you start — it prevents missed pieces.

Step 2 · Watch

Watch the main video, then check the second take if you want another explanation.

Khan Academy

Split a weird shape into rectangles and triangles.

Math with Mr. J

Step-by-step practice with combined shapes.

Step 3 · Practice

Try a worksheet or work through some problems before the quiz.

Step 4 · Check

A couple of questions to make sure this topic stuck. Retake as many times as you want.

Composite Figures

Medium

An L-shape is an 8 × 6 rectangle with a 3 × 2 corner removed. What is its area?