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Kris5
 3 years ago
Help please! Each base angle of an isosceles triangle is 30 more than twice the measure of the vertex angle. What is the measure of the vertex angle?
Kris5
 3 years ago
Help please! Each base angle of an isosceles triangle is 30 more than twice the measure of the vertex angle. What is the measure of the vertex angle?

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thushananth01
 3 years ago
Best ResponseYou've already chosen the best response.22(30+2x) + x = 180 60+4x+x=180 5x=120 x=24 vertex angle = 24

lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1Hint: isosceles means the base angles are equal. The sum of the measures of the three angles is 180 degrees so the formula for the angles is: x + y + z = 180 where x, y, and z are angles since it is isosceles.. x= y your base angle is given to be 30 + 2z where z is the vertex angle so x = y = 30 + 2z (30 + 2z) + (30 + 2z) + z = 180
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