Question

In quadrilateral ABCD B =90 C-D=60 and A-C-D=10. Find A C and D

Answer 1

Answer:

A=70,B=90,C=130,D=70  

Step-by-step explanation:  as B=90,

 a-c-d=10 and c-d=60

now substitute c-d value in a-c-d

so;  a-60=10 then a=70

a+b+c+d =360 because it isa quadrilateral

so c+d=200

  (+)

   c-d=60

2c=260

c=260/2=130

a+b+c+d=360

70+90+130+d=360

d =360-290

 =70