Question

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Answer 1

A + B + C + D = 360

A/9 = B/4 = C/10 = D/13 = K =>

A = 9K

B = 4K

C = 10K

D = 13K

9K + 4K + 10K + 13K = 360

36K = 360

K = 10°

A = 10K = 9×10 = 90°

B = 4K = 4×10 = 40°

C = 10K = 10×10 = 100°

D = 13K = 13×10 = 130°

Answer 2

Răspuns:

Explicație pas cu pas:

A/9 = B/4 = C/10 = D/13 = > k

A = 9k

B = 4k

C = 10k

D = 13k

9k + 4k + 10k + 13k = 360°

36k = 360

k = 360 : 36

k = 10

A = 9 x 10 = 90°

B = 4 x 10 = 40°

C = 10 x 10 = 100°

D = 13 x 10 = 130°