PLEASE HELP!!

Quadrilateral ABCD is inscribed in circle O as shown below.


Which of the following would be used to find the m∠3?


A. 90°+m∠4


B. 180°−m∠1


C. 270°+m∠2


D. 360°−(m∠1+m∠2)

PLEASE HELP Quadrilateral ABCD is inscribed in circle O as shown below Which of the following would be used to find the m3 A 90m4 B 180m1 C 270m2 D 360m1m2 class=

Respuesta :

Answer:

A. 90°+m∠4

Step-by-step explanation:

Also  

∠ A + ∠ C = 180  o = ∠ B + ∠ D

⇒ 2 x+ ( 3 x − 5 ) = 180  0 = ( x + 5 ) +  ∠  C

5 x  −  5  =  180

Add 5 to both sides

5 x  =  185

Divide both sides by 5

x =  185  5  =  37

But it was A. 90°+m∠4