60∘:60∘:240∘60^{\circ}: 60^{\circ}: 240^{\circ}60∘:60∘:240∘
90∘:90∘:180∘90^{\circ}: 90^{\circ}: 180^{\circ}90∘:90∘:180∘
120∘:120∘:120∘120^{\circ}: 120^{\circ}: 120^{\circ}120∘:120∘:120∘
150∘:150∘:60∘150^{\circ}: 150^{\circ}: 60^{\circ}150∘:150∘:60∘