if the measure of angle 2 is (5x+12) and angle 3 is (7x-14), what is the measure of angle 1 in degrees?
2 answers:
Answer:35x^2+14x-168
Step-by-step explanation:
Answer with explanation:
The sum of measures of three angles of triangle is 180°.
→∠1+∠2+∠3=180°
→∠1+(5x+12)°+(7x-14)°=180°
→∠1+(5x+7x)+(12-14)°=180°
→∠1+12 x-2°=180°
→∠1=180°+2°-12 x
→∠1=182°-12 x
That is ,Third Angle =182°-12 x
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