< 1 = х ; < 2 = 2х ; < 3 = 4х ; < 4 = 8х ; < 1 + < 2 + < 3 + < 4 = 360° ; х + 2х + 4х + 8х = 360 ; 15х = 360 ; х = 360 : 15 ; х = 24 → < 1 = х = 24° ; < 2 = 2х = 2 * 24 = 48° ; < 3 = 4х = 4 * 24 = 96° ; < 4 = 8х = 8 * 24 = 192°.
< 1 = х ; < 2 = 2х ; < 3 = 4х ; < 4 = 8х ; < 1 + < 2 + < 3 + < 4 = 360° ; х + 2х + 4х + 8х = 360 ; 15х = 360 ; х = 360 : 15 ; х = 24 → < 1 = х = 24° ; < 2 = 2х = 2 * 24 = 48° ; < 3 = 4х = 4 * 24 = 96° ; < 4 = 8х = 8 * 24 = 192°.