Question

ABCD is a parallelogram. Determine the measure of ZB.

A) 78°
B) 52°
C) 39°
D) 96°

Answer 1

Answer is A due to 78° being zb

Answer 2

`\huge\fbox{Answer ☘}`

☆ given that ,

ABCD is a parallelogram

☆ we know that ,

opposite angles of a parallelogram are equal.

Therefore ,

`\bold\blue{∠B \:= \:∠D}`

`\pink{3x = x + 52} \\ \pink{3x - x = 52 }\\\pink{ 2x = 52 }\\\pink{ x = (52)/(2)} \\ \\ \bold\blue{x = 26}`

therefore , ∠B = 3x = 3 ( 26° ) = 78°

`\fbox{∠B \: = \: 78°}`

thus option ( A ) is correct ~

hope helpful~