When you want to split a number N up into three parts in the ratio of P:Q:R, the three parts are: 1st part:·N 2nd part: ·N 3rd part: ·N You know that the sum of the three angles in any triangle is 180°. So you want to split N=180° up into three parts in the ratio of 8:3:4, so P=8, Q=3, R=4 1st part: ·180° = ·180° = 96° 2nd part: ·180° = ·180° = 36° 3rd part: ·180° = ·180° = 48° The smallest of those three is 36°. [As a check we add those three: 96°+36°+48°= 180°] Edwin