angles x=

-1-

-2-

 

on a:

2a+x=2b

x+a=23°+b

<>

2a+x=2b

2x+2a=46°+2b

<>

2x+2a-(2a+x)=46°+2b-2b

<>

x=46°

-----------

a¹=23°[alt. angle]=a²

B¹=23°+a²=46°

Then, 2B=x+2a=92°=x+(23°+23°) 

[int. opp. angles]

:.x=46°✔️=2a

---------------------

------------------

Angles x & y = ???

----------

X =75°

Y=105- 75=30°

-------------

25x^2=16X^2+(18)^2

9X^2=18^2

X=6

المساحة المطلوبة= 1/2*24*10=120

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BLUE AREA = ???

-3-

-4-