The area formula and derivation process of each figure I didn't want to give points, but there are many. If the answer is simple and correct, 10 points will be added Rectangles, squares, circles, triangles, trapezoids and other elementary school on the line, is a plane graphics. There is also a derivation process

The area formula and derivation process of each figure I didn't want to give points, but there are many. If the answer is simple and correct, 10 points will be added Rectangles, squares, circles, triangles, trapezoids and other elementary school on the line, is a plane graphics. There is also a derivation process

I think LZ is no longer used
I'm helping you add 2 sentences: RT, that's it