The angles of a triangle are 5(y-1)°, 3(2y-5)° and 9y°. Find y and assign the name of the triangle
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5y-5+6y-15+9y=180
20y-20=180
y-1=9
y=10
5y-5=50-5=45°
6y-15=60-15=45°
9y=90°
therefore it is an right isosceles angle triangle
20y-20=180
y-1=9
y=10
5y-5=50-5=45°
6y-15=60-15=45°
9y=90°
therefore it is an right isosceles angle triangle
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