Hi there,
You can do so but your shape might turn out wonky or not in proportion.
It really depends because the question might need you to use a grid.
Overall it is better using a grid.
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To find the perimeter and areas of complex shape without a grid you should divide the shape into simple shapes and find the area of each shape alone and then add up the areas all together to get the area of the whole shape. Example: If there is a shape that can be divided into 2 triangles and 1 rectangle then you will find the area of each triangle alone and then the area of the rectangle then add up all the areas together.
it goes upside down
The perimeter is also twice as large.
mesure the distance from the point to a corner, then keep going for distance * scale do it for each corner
area distance shape direction scale