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If Two Sides of a Triangle Are Unequal, Then the Angle Opposite to the Greater Side Is Greater Than Angle Opposite to the Smaller Side

Two angles of...

Question

Two angles of a triangle are of measures 78 $°$ and 36 $°$ . The measure of the third angle is

36 $°$

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78 $°$

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66 $°$

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76 $°$

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Solution

The correct option is C
66 $°$

Sum of all angles in triangle=180 $°$
one angle=78 $°$
second angle=36 $°$
third angle=x $°$
x + 78 $°$ + 36 $°$ = 180 $°$
x = 66 $°$

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