Use triangles and rectangles to find the area of any polygon.
Read this first — it covers the idea in plain language with a worked example.
Any polygon can be broken into triangles and rectangles whose areas you already know. Find each piece, then add them together.
Triangle area is ½ × base × height. Pick a base, then measure the height straight down from the opposite point.
A hexagon splits into 6 identical triangles, each with area 12 cm². Find the total area.
Tip
Decide whether a word problem asks for area (covering a surface) or perimeter (going around the edge) before you start.
Watch the main video, then check the second take if you want another explanation.
Try a worksheet or work through some problems before the quiz.
A couple of questions to make sure this topic stuck. Retake as many times as you want.
Area Review & Polygons
Which formula finds the area of a triangle?
