Change Scale: Area & Perimeter Changes
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This example demonstrates how the area and perimeter of a polygon change when the scale is altered. Key mathematical concepts include area, perimeter, and scale transformation. Using GeoGebra commands such as Point, Polygon, Perimeter, and Area, dynamic observations of polygon changes can be made. Suitable for middle school and above students to learn about geometric transformations and proportional relationships.
GeoGebra Commands & Parameters
Point(Circle[A, 1]) → BPolygon(E, F, G, H) → poly2, e, f, g, hPerimeter(poly2) → iArea(poly2) → jPerimeter(poly2) → perimeterpoly2Perimeter(poly2) → mPoint(Circle[A_1, 1]) → B_1Polygon(A_1, B_1, C_1, D_1) → poly1_1, a_1, b_1, c_1, d_1Perimeter(poly1_1) → k_1Area(poly1_1) → l_1Perimeter(poly1_1) → perimeterpoly1_1Segment(I, J) → n