We are given a triangle with one exterior angle of $130^\circ$ and one interior angle labeled as $x$. The other interior angle is labeled as $2^\circ$. We need to find the value of $x$.

GeometryTrianglesAnglesExterior AnglesInterior Angles
2025/6/17

1. Problem Description

We are given a triangle with one exterior angle of 130130^\circ and one interior angle labeled as xx. The other interior angle is labeled as 22^\circ. We need to find the value of xx.

2. Solution Steps

First, we find the interior angle adjacent to the 130130^\circ exterior angle. Since they form a linear pair, their sum is 180180^\circ.
Let the interior angle be yy.
y+130=180y + 130^\circ = 180^\circ
y=180130y = 180^\circ - 130^\circ
y=50y = 50^\circ
Now we know the three interior angles of the triangle: xx, 22^\circ, and 5050^\circ.
The sum of the interior angles of a triangle is 180180^\circ.
x+2+50=180x + 2^\circ + 50^\circ = 180^\circ
x+52=180x + 52^\circ = 180^\circ
x=18052x = 180^\circ - 52^\circ
x=128x = 128^\circ

3. Final Answer

x=128x = 128^\circ

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