Question

Q8.The measures of the three angles of a quadrilateral are given as follows .Find the fourth angle. *
65°, 75°, 85°
(a) 65°
(b) 75°
(c) 85°
(d) 135°​

Answer 1

Answer:

135

Step-by-step explanation:

because of series that's why ok

Answer 2

Answer:

l

By angle sum property of a quadrilateral, 

sum of all the interior angles=360∘

Let x be the fourth angle.

∴48∘+85∘+140∘+x=360∘

∴x=360∘−273‬∘=87∘

= 80° to 87°

by answer is option (c)