theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1: ∀ (v : qszr71sj.TwoDimensionalSpatialRegion), qszr71sj.SpatialRegion.Is (Subtype.val v)
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1
theorem instCoeTwoDimensionalSpatialRegionSpatialRegion._proof_1: ∀ (v : qszr71sj.TwoDimensionalSpatialRegion), qszr71sj.SpatialRegion.Is (Subtype.val v)