How do you find the missing angle of a triangle
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First determine the missing angle for triangle 1 and triangle 2. Then apply the angle-angle criterion to determine if the two triangles are similar. Choose all that are similar. Triangle 1 – ∠1 = 50°, ∠2 = 30° Triangle 2 – ∠2 = 20°, ∠3 = 100° Triangle 1 – ∠1 = 60°, ∠2 = 20° Triangle 2 – ∠1 = 40°, ∠3 = 100° Triangle 1 – ∠1 = 25°, ∠2 = 115° Triangle 2 – ∠1 = 25°, ∠3 = 40° Triangle 1 – ∠1 = 5°, ∠2 = 15° Triangle 2 – ∠2 = 15°, ∠3 = 160°