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Ajutooooooooorrrrrrrrrrr class=

Răspuns :

x+2x+5+2·8=90
3x+5+16=90
3x+21=90
3x=90-21
3x=69
x=69÷3
x=23°
m(∡AOB)=90°
m(∡BOE)=8°
[OE=bisectoarea ∡DOB⇒∡DOE≡∡EOB=8°
x+2x+5+2x8=90
3x=90-16-5
3x=69
x=69:3=23°