Երկրաչափություն Դաս 3

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58. P = 66
2 + 4 + 5 = 11
66 : 11 = 6

2 * 6 = 12
4 * 6 = 24
5 * 6 = 30

62. AB = MN, BC = NK, <A = <M = 40O, <B = <N = 60O, <C = <K = 80O

153. <A = <D, <C = <F, EF = 14, DF = 20, BC = 21

BC/EF = AC/DF
21/14 = AC/20 = 21*20=AC*14
AC = 20

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