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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Let the angles be x, y and z then x+y+z=180° A/Q- Case I: x+y=80° x=80°-y------------(1) Case II: x-y=20° x=20°+y---------(2) On comparing equation (1) and (2) 80°-y=20°+y ⇒2y=80°-20° y=60°/2 y=30° Then x=80°-30° x=50° We know that x+y+z=180° 80°+z=180° z=180°-80° z=100° So, The angles are 30°, 50° and 100°.