The measures of two angles of ABC (shown in the illustration) are given. Find the measure of the third angle, if $m ( \angle A ) = 51.08 ^ { \circ }$ and $m ( \angle B ) = 56.46 ^ { \circ }$ . A) $71.46 ^ { \circ }$ B) $72.46 ^ { \circ }$ C) $82.47 ^ { \circ }$ D) $72.57 ^ { \circ }$ E) $72.36 ^ { \circ }$

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The Answer of The measures of two angles of ABC (shown in the illustration) are given. Find the measure of the third angle, if $m ( \angle A ) = 51.08 ^ { \circ }$ and $m ( \angle B ) = 56.46 ^ { \circ }$ . A) $71.46 ^ { \circ }$ B) $72.46 ^ { \circ }$ C) $82.47 ^ { \circ }$ D) $72.57 ^ { \circ }$ E) $72.36 ^ { \circ }$

The Measures of Two Angles of ABC (Shown in the Illustration)