All four sides of a rhombus are equal. AB = 2 in. = BC = CD = DA
Begin by drawing CD 2 inches long:
With your protractor, carefully measure an angle at C, which is angle BCD
which is 55°, and draw CB exactly 2 inches long.
The angle at B must be supplementary to the angle at C, which is 55°.
So we subtract 180°-55° = 125°.
So with your protractor, carefully measure an angle at D, which is angle
ABC = 125°, and draw BA exactly 2 inches long.
Finally draw AD, and you're done:
Edwin