Euclidea 2.8: Solution !new!

Let me give the (the one Euclidea accepts for 2.8):

While earlier levels teach the basics of bisecting angles and copying segments, Level 2.8 demands a synthesis of those skills. It is the moment where the game shifts from "follow the tutorial" to "apply geometric theory." euclidea 2.8 solution

That works because AC is perpendicular to OA (proof by symmetry). Let me give the (the one Euclidea accepts for 2

The line connecting the intersection points of two circles is perpendicular to the line connecting their centers. In this specific configuration, the geometric properties ensure the resulting angle at 90 raised to the composed with power relative to the radius. math.stackexchange.com , 2.9 "Circle Tangent to Line"? euclidea 2.8 solution

That’s the elegant minimal L solution.