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Kris5 Group Title

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?

  • 2 years ago
  • 2 years ago

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  1. thushananth01 Group Title
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    2(30+2x) + x = 180 60+4x+x=180 5x=120 x=24 vertex angle = 24

    • 2 years ago
  2. Kris5 Group Title
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    thank you :)

    • 2 years ago
  3. lgbasallote Group Title
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    Hint: 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

    • 2 years ago
  4. Kris5 Group Title
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    thanks "]

    • 2 years ago
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