An 8 sided shape which is an octagon has 8 interior angles that add up to 1080 degrees and its 8 exterior angles add up to 360 degrees.
octagon
Do you mean an octagon with ONLY 4 right angles? If you just need at least 4 right angles than you just need to make a block lettered capital "T"
they are angles that are wierd and dont make angles that are angles to 360 degrees and make non-angles to make angles
Just about any shape that isn't a circle can have two or more acute angles. But with some of them, you need to make them have acute angles.
If you are making one where all sides and angles are equal then the angles have to be 120 degrees. .
Just one of them and two acute angles that add up to 90 degrees.
To make a square, you need to create a shape with four equal sides and four right angles.
It has 5 angles, but if you're cutting pieces of wood to make one , you'll need to cut 10 angles to fit them together. 5 angles equal 360 degrees divided by 5 = 72 degrees but to cut each piece to make the 72 degree angles you have to make each cut half of 72 or 36 degrees
Supplementary angles.
you need the numbers & angles to make something right, in vehicle engineering you need it for the different parts of the car, measurements mostly.
Two angles which added together make 90o are called Complementary angles
Complementary angles.