Euclidea 2.8 __link__ -

Same steps, but ensure minimal circle/line use:

The goal of level 2.8 is to construct a $45^\circ$ angle given a base ray (a line segment with an endpoint), using a strictly limited number of moves. Specifically, you are usually given a point $O$ and a point $A$, defining the ray $OA$. You must construct a point $B$ such that $\angle AOB = 45^\circ$. euclidea 2.8

For the 3E star, you do not need to identify or use the circle's center. Same steps, but ensure minimal circle/line use: The

To get $45^\circ$, construct a square standing on $OA$ and draw the diagonal. Square construction: 3E/3L? Usually square is 3 moves if you have a perpendicular. If we assume we can make a perpendicular in 2 moves? No. euclidea 2.8