Part 3 - Rhombus: Dynamic Exploration of Sides, Diagonals, Perimeter and Angles

① This example demonstrates how to construct a complete rhombus in GeoGebra, dynamically showing the relationships among side lengths, diagonals, perimeter, and interior angles. ② Core mathematical concepts include the definition of a rhombus (all sides equal), perpendicular bisecting diagonals, parallel opposite sides, equal opposite angles, and calculations of perimeter and distances. ③ Construction highlights: from the summary, commands such as Segment, Line, Intersect, Polygon, Perimeter, PointIn, Angle, Distance, and Midpoint are used, creating objects D, A, g, B, h, f, i, C, poly1, d, c, a, e, perimeterpoly1, Pointpoly1, α, β, γ, δ, j, k, E, l, m, n, p, and computing distances BE, AE, DE, CE with text labels. ④ Suitable for middle school geometry classes to intuitively grasp rhombus properties, perimeter and diagonal relations, and as a dynamic exploration or exercise demonstration.