Theorem 9.1 : Parallelograms on the same base and between the same parallels are equal in area.

Parallelograms on the same base and between the same parallel are equal in area.

Figures on the same base and between the same parallels

Prove that Parallelograms on the same base and between the same parallels are equal in area.

Triangles on the same base and between the same parallel are equal in area.

Triangles on the same base and between the same parallels are equal in area.

Parallelogram on equal bases and between the same parallels are equal in area.

Using vectors, prove that the parallelogram on the same base and between the same parallels are equal in area.

Prove by vector method that the parallelograms on the same base and between the same parallels are equal in area.

Using vectors, prove that the parallelogram on the same base and between the same parallels are equal in area.