Q. In △GHI,m∠G=(5x+17)∘,m∠H=(4x−10)∘, and m∠I=(3x+5)∘.Find m∠G.Answer:
Triangle Angle Sum Property: In triangle GHI, the sum of the angles must equal 180 degrees because it is a property of all triangles. We can write this as an equation:m/G+m/H+m/I=180∘Substitute the given expressions for m/G, m/H, and m/I:(5x+17)∘+(4x−10)∘+(3x+5)∘=180∘
Combine Like Terms: Combine like terms to simplify the equation:5x+17+4x−10+3x+5=1805x+4x+3x+17−10+5=18012x+12=180
Isolate x Term: Subtract 12 from both sides to isolate the term with x:12x+12−12=180−1212x=168
Solve for x: Divide both sides by 12 to solve for x:1212x=12168x=14
Find Angle G: Now that we have the value of x, we can find m/_G by substituting x back into the expression for m/_G: m/_G=(5x+17)@ m/_G=(5(14)+17)@ m/_G=(70+17)@ m/_G=87@
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