Triangles

The figure above shows a triangle
ACE within rectangle ABCD,
The area of rectangle ABCD is 72cm².
If DE is thrice as long as EC,
find the area of triangle ACE.
In the figure above, EF=FG and ABCD is a rectangle. Find the area of the shaded parts.
ABCD is made up of 2 triangles. Find the area of ABCD
In the figure above, ABCD is a square. BXYC is a rectangle. Find the total shaded area in AXYD
Find the total shaded area of the triangle above.
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