Question

How to show ABCD are the angular points of parallelogram ABCD​

Answer 1

Step-by-step explanation:

a and. d are are opposite so they are equal

a=d

similarly b=c

thus they are angular points

Answer 2

Answer:

Mark me as brainiest

Step-by-step explanation:

ANSWER

Here AB =

(3+1)

2

+(1−0)

2

=

17

BC=

(2−3)

2

+(2−1)

2

=

2

CD=

(−2−2)

2

+(1−2)

2

=

17

AD=

(−2+1)

2

+(1−0)

2

=

2

Here,AB=CD and BC=AD

Therefore its a parallelogram