There is a rectangle ABCD of which area is 140cm2.
As shown in a figure, the point E is inside the rectangle.
The area of the triangle ABE is 42cm2 and the area of the the triangle BCE is 21cm2.
Answer the following questions.
(1) Find the area of triangle CDE.
(2) Find the area of triangle BDE.
(3) The intersection of the diagonal line AC and the diagonal line BD is set to F and the intersection of the diagonal line AC and the line DE is set to G.
Find the difference of the area of the triangle DFG and the area of the triangle CEG.
As shown in a figure, the point E is inside the rectangle.
The area of the triangle ABE is 42cm2 and the area of the the triangle BCE is 21cm2.
Answer the following questions.
(1) Find the area of triangle CDE.
(2) Find the area of triangle BDE.
(3) The intersection of the diagonal line AC and the diagonal line BD is set to F and the intersection of the diagonal line AC and the line DE is set to G.
Find the difference of the area of the triangle DFG and the area of the triangle CEG.
Answer
(1) 28 cm2
(2) 21 cm2
(3) 7 cm2
(2) 21 cm2
(3) 7 cm2
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