If ABCD is a prallelogram, then prove the area(△ABD)=area(△BCD)=area(△ABC)=area(△ACD)=12area(||gmABCD)

If ABCD is a prallelogram, then prove the area(△ABD)=area(△BCD)=a

1.	If ABCD is a prallelogram, then prove the area(△ABD)=area(△BCD)=area(△ABC)=area(△ACD)=12area(\|\|gmABCD)
Answer» If ABCD is a prallelogram, then prove the $a r e a (△ A B D) = a r e a (△ B C D) = a r e a (△ A B C) = a r e a (△ A C D) = \frac{1}{2} a r e a (\| \|^{g m} A B C D)$