Question

In a quadrillateral PQRS if angle P=85',
R = 105° and angle s=120 find.​

Answer 1

Step-by-step explanation:

total sum of all the sides of quadrilateral is 360

p=85 r=105 s=120

85+105+120+Q=360

310+Q=360

Q=360-310

=50

Answer 2

Given,
A quadrilateral PQRS
Where P = 85’ , R = 105’ and S = 120’

We know,
The Sum of angles of a quadrilateral = 360’
So,
|_P + |_Q + |_R + |_S = 360’
=> 85’ + |_Q + 105’ + 120’ = 360’
=> 310 + |_Q = 360’
=> |_Q = 360’ - 310’
=> |_Q = 50’

Hope this helps :)