Two angel's of a triangle measure 12* and 40* what is the measure of the third angle
1 answer:
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Answer:
49
Step-by-step explanation:
side 1 = |18-3|= 15
side 2 = |12-3| = 9
side 3 = |16-4| = 12
side 4:
perimeter = 15 + 9 + 12 + 13,4= 49,4 = 49