SOLUTION: In a triangle the measure of the first angle is one-half the measure of the second angle. The third angle's measure is 20° less than the measure of the second angle. What are the m

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: In a triangle the measure of the first angle is one-half the measure of the second angle. The third angle's measure is 20° less than the measure of the second angle. What are the m      Log On

Let 

 = first angle,
 = second angle
 = third angle

So 

So 

Since 

  





Add  to both sides:



Multiply every term by 2 to clear of fractions:

















Edwin