SOLUTION: The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.
Algebra ->
Triangles
-> SOLUTION: The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.
Log On
Question 763937: The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The second angle of a triangle is twice the first angle. the third angle is 20 degrees more then the first angle. Find the first angle.
-------------------
1st angle: x
2nd angle: 2x
3rd angle: x+20
---------------------------
Equation:
sum of angles is 180
---
x +2x +x + 20 = 180
4x = 160
x = 40 (1st angle)
2x = 80 (2nd angle)
x+20 = 60(3rd angle)
===========================
Cheers,
Stan H.
===============
(