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Draw an angle ZAOB = 100° With the same vertex 0, draw ZBOC = 80°
such that OB is common to two angles.
B
80-100
O
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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Even though such situations happened are between groups it is better that they are
discussed with leaders individually or individuals involved individually.
Deal
Bargain
Agree
Conflict
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