Question

Rpdddd!!!! Va rooog! E cu nota! În afara de exercițiul 1. ​

Answer 1

Răspuns:

1)a)0°

b)90°

c)360°

d)180°

e)ascuțit

f)obtuz

2)a)63°52'

b)10°85'

c)72°96'

d)13°63'

3)complement:90°-83°34'=6°26'

suplement:180°-83°34'=96°26'

4)<AOB+<BOC+<COD+<DOA=360°

AOB=x

BOC=2x°+10°

BOC=2x°+10°COD=3x°-5°

BOC=2x°+10°COD=3x°-5°AOD=4x°+5°

BOC=2x°+10°COD=3x°-5°AOD=4x°+5°x+2x+10+3x-5+4x+5=360°

10x+10=360

10x+10=36010x=350

10x+10=36010x=350x=35°

<AOB=35°

<BOC=2×35+10=80°

<COD=3×35-5=105-5=100°

<DOA=4×35+5=140+5=145°

5)a+b=180°. a+b=180°. a+b=180°. a+b=180°

a=2b. a-2b=0. 3b=180° b=180°/3

a=180°-60°. a=120°

b=60°. b=60°