Question

13. Aflaţi măsura ca unghiului​

Answer 1

Explicație pas cu pas:

a)

$\alpha = \dfrac{108 \degree}{2} = 54 \degree$

b)

$\alpha = \dfrac{111 \degree}{2} = 55.5 \degree = 55 \degree 30^{ \prime}$

c)

$\alpha = 2 \cdot 90 \degree = 180 \degree$

d)

$\alpha = 2 \cdot 87 \degree = 174 \degree$