Answer:
Option C......46°
Step-by-step explanation:
A triangle has three interior angles .
Sum of angles in a triangle = 180°
First angle = 100°
Second angle = 34°
Third angle = ??
180° = 100° + 34° + Third angle
180° - 134° = Third angle
46° = Third angle.
The answer is 84
hope this helps :)
81.5%
2X + 1 + 3X - 2 + 4X - 5 = 180
9X - 6 = 180
9X = 174
9 = 174
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9 9
X = 19.333