Plzzz help find rhoumbus for paralellogram find X and equation

Name the quadrilaterals that have four equal sides.

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.