Question

in the address in the adjoining figure ABCD is a parallelogram if angle Dab is equal 85 and angle the BC is equal to 60 degree then calculate first anniversary be second angle AB de​

Answer 1

Step-by-step explanation:

In parallelogram ABCD

AB=CD and AD=BC

AD is parallel to BC and side AB is parallel to CD

Angle DAB=85 degrees

Angle DBC=60 degrees

Angle DBC=Angle ADB=60 degree

Reason: Alternate interior angles are equal

In triangle ABD  degrees

Reason: Triangle angles sum property

Reason: Alternate interior angles are equal.