Ключевые слова: 19sided polygon, abstract art, adult coloring, angular design, central symmetry, coloring page, concentration, creative outlet, decagon, enneadecagon, evensided figure, focus, geometric art, geometric shapes, homogeneity, intricate design, mandala, meditation, polygonal patterns, regular polygon, relaxing activity, selfcontained illustration, shadingfree, shadowfree, signaturefree, simple patterns, stress relief, symmetry, textfree, therapeutic art, white space, zoom out,