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Here are some of the ways you can make some new shapes. You can turn the trapezoid 90° and leave the triangle the same way, you will get a 4 sided shape.
Another way you can do this is to rotate the trapezoid around and put the triangle on the top of the trapezoid and you get a large right angle triangle.
You can also rotate the triangle 90° and keep the trapezoid the same way, then put the triangle at the base of the trapezoid and you’ll getting a new shape.
These are some of the shapes that I have found, but there must be more shapes please tell me if you find any more,
Chloe Eastcourt Independent School