The perimeter of the irregular shape is equal to the sum of the six segment around the outside of the figure. 1. Select the endpoints of the segment to be measured. 2. Measure distance. 3. Use the measure calculate feature of Geometer's Sketchpad to add the distance.
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To find the area of irregular shapes, first, we need to divide the irregular shape into regular shapes that you can recognize such as triangles, rectangles, circles, squares and so forth. Then, find the area of these individual shapes and add them to get an area of irregular shap
Divide the irregular figure into manageable pieces and work out their individual areas, sum the areas to that of the original figure. Measure the perimeter.
I assume you mean the calculation required. Split the irregular shape up into shapes for which you can find the area (eg rectangles, triangles), then the area of the shape is the sum of the areas of the smaller shapes.
1.) You can measure the sides of the shapes and add
For any irregular shape, you must divide it into shapes that are regular and find the area of those then add up all of the parts to find the area of the whole.