Question

cat mai repede!dau coroana!​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

Salut!

$\bf \{∡A,∡B,∡C\} \: d.p. \{5,8,5. \}$

$\bf \: ∡A+∡B+∡C = 180°.$

$.....................................................................$

$\bf \large \frac{∡A}{5} = \frac{∡B}{8} = \frac{∡C}{5} = k. ⇒ k = \frac{∡A+∡B+∡C}{5 + 8 + 5} = \frac{180}{18} = 10.$

$\bf \frac{∡A}{ 5} =k⇒∡A=5 \times 10 = 50°.$

$\bf \frac{∡B}{ 8} =k⇒∡B=8\times 10 = 80°.$

$\bf \frac{∡C}{ 5} =k⇒∡C= 5 \times 10 = 50°.$