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How Do You Find Missing Angles in a Triangle With Variables?
Find the measures of all the angles in this triangle
Summary
- Add the three angles together and set them equal to 180
° - Plug each of the values for the angle measurements into the equation to solve for x
- Plug 26
° in for x to find the angle measurements

Notes
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The Triangle Sum Theorem says that the three angles of a triangle always add up to 180
° -
So we can add all the angles together and set them equal to 180
° to make an equation to solve for x
-
The Triangle Sum Theorem says that the three angles of a triangle always add up to 180
-
- Angle ZYW measures 4x
- Angle YWZ measures 2x
-
Angle YZW measures 24
°
-
- We can plug the values we found for each angle into the equation we made earlier
-
- Add 4x and 2x to get 6x
- Subtract 24 from both sides to get the x term by itself
- Divide both sides by 6 to get x by itself
-
-
We need to plug 26
° in for x in our original angle measurements to find our answers
-
We need to plug 26