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Area Calculation of Irregular Shapes

Area Calculation of Irregular Shapes
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2016-03-23 01:02
PolygonGeometric Construction
This example demonstrates calculating the area of irregular shapes using unit squares. Key mathematical concepts include area calculation and geometric construction. The Polygon command is used to draw irregular polygons. Suitable for high-grade elementary or junior high school students to learn area calculation and geometric construction.

GeoGebra Commands & Parameters

  1. Polygon(A, B, 4) → poly1, a, b, c, d, C, D
  2. Polygon(E, F, 4) → poly2, e, f, g, h, G, H
  3. Polygon(I, J, 4) → poly3, i, j, k, l, K, L
  4. Polygon(M, N, 4) → poly4, m, n, p, q, O, P
  5. Polygon(Q, R, 4) → poly5, q_1, r, s, t, S, T
  6. Polygon(U, V, 4) → poly6, u, v, a_1, b_1, W, Z
  7. Polygon(A_1, B_1, 4) → poly7, a_2, b_2, c_1, d_1, C_1, D_1
  8. Polygon(E_1, F_1, 4) → poly8, e_1, f_1, g_1, h_1, G_1, H_1
  9. Polygon(I_1, J_1, 4) → poly9, i_1, j_1, k_1, l_1, K_1, L_1
  10. Polygon(M_1, N_1, 4) → poly10, m_1, n_1, p_1, r_1, O_1, P_1
  11. Polygon(Q_1, R_1, 4) → poly11, q_2, r_2, s_1, t_1, S_1, T_1
  12. Polygon(U_1, V_1, 4) → poly12, u_1, v_1, c_2, d_2, W_1, Z_1
  13. Polygon(A_2, B_2, C_2, D_2, E_2, F_2, G_2, H_2) → poly13, a_3, b_3, c_3, d_3, e_2, f_2, g_2, h_2
  14. Polygon(I_2, J_2, K_2, L_2, M_2, N_2, O_2, P_2, Q_2, R_2) → poly14, i_2, r_3, j_2, k_2, l_2, m_2, n_2, o_2, p_2, q_3
  15. Polygon(S_2, T_2, U_2, V_2, W_2, Z_2, A_3, B_3) → poly15, s_2, t_2, u_2, v_2, w_2, z_2, a_4, b_4
  16. Polygon(W_3, Z_3, I_4, J_4, A_4, B_4, C_4, D_4, E_4, F_4, G_4, H_4) → poly17, w_3, h_4, i_4, j_4, z_3, a_5, b_5, c_5, d_5, e_4, f_4, g_4
  17. Polygon(K_4, L_4, M_4, N_4, O_4, P_4, Q_4, R_4) → poly16, k_4, l_4, m_4, n_4, o_4, p_4, q_4, r_4