31328217perspective-related conceptsPT2026-03-30 20:28:29UF31328218concepts, perspective-relatedNDUF31328219perspective-related conceptNDBT31309387visual and representational conceptsPTNT31362113picture planePTNT31362115vanishing pointPTNT31362117orthogonalsPTNT31362119vanishing areaPTNT31362122center of projectionPTNT31362125horizon linePTNT31362127station pointPTNT31362129vanishing axisPT