What is the value of a?
a-470°
a+250°
a-45°
a =
1 answer:
Answer:
a = 117°
Step-by-step explanation:
The exterior angle of a triangle = the sum of the remote interior angles.
a + 25° = (a - 47°) + (a - 45°)
a + 25° = (a + a) + (-47 - 45)
a + 25° = 2a - 92°
<u>-2a = -2a </u>
-a +25 = -92
<u> -25 = -25 </u>
-a = -117°
a = 117°
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