Question

the measure of 3 angles of a quadrilateral is 30*,70* and 100*.Find out the measurement of fourth angle.





Please help​

Answer 1

Answer:

The measure of all 4 angles of a quadrilateral is: (n-2)*180=4-2*180=2*180= 360°

So,

100+30+70+x=360°

200+x=360°

x=360°-200

x=160°

Answer 2

Step-by-step explanation:

Given=3 angles of quadrilateral are a=30

Given=3 angles of quadrilateral are a=30 b=70

b=70 c=100

b=70 c=100To find = 4th angle of quadrilateral, d=?

b=70 c=100To find = 4th angle of quadrilateral, d=? solution =

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,a+b+c+d= 360°

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,a+b+c+d= 360°30+70+100+d=360

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,a+b+c+d= 360°30+70+100+d=360200+d=360

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,a+b+c+d= 360°30+70+100+d=360200+d=360d=360-200

b=70 c=100To find = 4th angle of quadrilateral, d=? solution = property = The measure of all angles of quadrilateral is 360°Hence,a+b+c+d= 360°30+70+100+d=360200+d=360d=360-200d=160

Hence, d=160