Answer:
ANGLE A=74
Explanation:
LET ANGLE A BE X
ANGLE B=40°
ANGLE C=66°
SUM OF ADJACENT ANGLE IS 180°
SO, WHEN:
40+66+X=180
X=180-106
ANGLE A=74°
HAVE A NICE DAY!!
74
All the angles of a triangle add up to 180
66+40 = 106
To find the missing angle...
180-106 = 74
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