Question

ab is parallel to dc and ad is parallel to then find angle dac​

Answer 1

Answer:

angle ADC=40 ,BAC=50

angle B+angle D=180

(sum of opposite angles. of a quadrilateral

angle 50 +angle D=180

angle D=180-50

angle D=130

now in ∆ABC

angle BAC.+ angle ABC +angle ACB =180

50+130+angle ABC =180

180+angle ABC =180

angle ABC=180-180

angle ABC =0

therefore AD||BC

now in ∆ ADC

60 + 130 +angle DCA=180

angle DCA=180-170=10