Answer: The sides from smallest to largest are RT, RS, ST
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Explanation:
The missing angle is R = 70 degrees. This is because R+S+T = 180. We plug in S = 50 and T = 60 to get R = 70.
Once you know all three angles, you can determine which side is the shortest and which is the longest.
The 2 rules are these:
- The smallest side is always opposite the smallest angle.
- The largest side is always opposite the largest side.
This applies to triangles only.
Since R = 70 is the largest angle, this makes the opposite side ST as the longest side. Then we have S = 50 as the smallest angle, so RT is the shortest side as it's opposite this smallest angle.
