You can't.
edit: If it is an equilateral triangle, draw a line from each corner towards the centre of the opposite side, but stop where the lines cross.
Chat with our AI personalities
no
Cut it into 3 rectangles.
If all sides of a triangle are of equal length, then all the angles are the same. The sum of the angles of a triangle is 180 degrees. If all 3 angles are the same, divide 180 by 3 = 60 degree angles.
You put 3 triangles in it.
An equilateral triangle has that.