Question

For a given parallelogram to be called a rhombus, which of the following must be true?

Opposite sides must be unequal
Opposite sides must be unequal

Adjacent angles must be equal
Adjacent angles must be equal

Adjacent sides must be equal
Adjacent sides must be equal

Opposite angles must be supplementary
Opposite angles must be supplementary

Answer 1

Step-by-step explanation:

adjacent sides must be equal.

Answer 2

Answer:

1. We know that sum of adjacent angle of parallelogram is 180 degrees so if one angle is less than 90 degree then other must be greater than 90 degree so this option is incorrect.

2. Diagonals of rhombus and square are at 90 degree so this option is not v true..

3. This option can be understand by attached diagram

So this option is true

4. Qudrilateral mentioned in option D may be parallelogram or may isosceles trapezium so this option may not be true

Step-by-step explanation:

I hope it will help u dear