Draw rhombus BEST with the following measurements and calculate its area.

ET = 9 cm and ∠E = 70°.

ET is a diagonal

Step 1 – Draw a line ET of length 9 cm.

ET is an angle bisector of ∠E as it is a diagonal in the Rhombus.

Also, opposite angles of a Rhombus are equal.

Step 2 – Draw lines at an angle 35° from E and T.

Here, ∠E = ∠T = 70°

∴ they make 35° with the diagonal ET as it is an angle bisector in a Rhombus.

Step 3 – Mark the intersecting points as B and S to complete the Rhombus.

Measure the lengths of its Diagonals D₁ and D₂ and then find the area by

Area =