convert cfg.sbtw_B_A₁_C.dist_lt_max_dist _
V : Type u_1
Pt : Type u_2
inst✝³ : NormedAddCommGroup V
inst✝² : InnerProductSpace ℝ V
inst✝¹ : MetricSpace Pt
inst✝ : NormedAddTorsor V Pt
hd2 : Fact (finrank ℝ V = 2)
cfg : Imo2019q2Cfg V Pt
⊢ dist cfg.A₁ (circumsphere cfg.triangleABC).center < (circumsphere cfg.triangleABC).radius
case h.e'_4
V : Type u_1
Pt : Type u_2
inst✝³ : NormedAddCommGroup V
inst✝² : InnerProductSpace ℝ V
inst✝¹ : MetricSpace Pt
inst✝ : NormedAddTorsor V Pt
hd2 : Fact (finrank ℝ V = 2)
cfg : Imo2019q2Cfg V Pt
⊢ (circumsphere cfg.triangleABC).radius =
    max (dist cfg.B (circumsphere cfg.triangleABC).center) (dist cfg.C (circumsphere cfg.triangleABC).center)