△ABC is an isosceles triangle. AB = AC, ∠BAC = 34° . Find the size of ∠ABC Collected in the board: Triangle Steven Zheng posted 1 year ago

∵ △ABC is an isosceles triangle ∠B = ∠C ∴ ∠ABC = \dfrac{180° - 34°}{2} = \dfrac{146}{2} = 74° Steven Zheng posted 1 year ago