theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1: ∀ (v : ta3nj1a4.TwoDimensionalSpatialRegion), ta3nj1a4.SpatialRegion.Is (Subtype.val v)
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1: ∀ (v : ta3nj1a4.TwoDimensionalSpatialRegion), ta3nj1a4.SpatialRegion.Is (Subtype.val v)