Do This Draw an angle ZAOB = 100°. With the same vertex 0, draw ZBOC= 800 such that OB is common to two angles. B 80% 100% А You will observe that the above angles form a straight angle that is 180º. Thus, the angles 100% and 80° are supplementary to each other. Are 130° and 70° supplementary angles? Why? Why not?
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sorry I don't know
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I think I forgot it if you remember the answer also tell me that's all
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