no goals
ι : Sort ?u.144516
𝕜 : Type u_2
E : Type u_1
inst✝² : LinearOrderedField 𝕜
inst✝¹ : AddCommGroup E
inst✝ : Module 𝕜 E
s t u : Set E
x y a b c : E
⊢ convexJoin 𝕜 {a} (segment 𝕜 b c) = ↑(convexHull 𝕜).toOrderHom {a, b, c}
rw [← segment_same 𝕜, convexJoin_segments, insert_idem]