MCQ
In $\angle\text{ABC}, \angle\text{A}=40^\circ$ and $\angle\text{B}=60^\circ$ Then, the longest side of $\triangle\text{ABC}$ is:
- A$AC$
- BCannot be determined
- C$BC$
- ✓$AB$
✓
Answer
Correct option: D.
$AB$
The third angle $\angle\text{C}=80^\circ$ [Angle sum property]
The side opposite to the longest angle is the longest side.
Therefore, $AB$ is the longest side of the triangle.
The side opposite to the longest angle is the longest side.
Therefore, $AB$ is the longest side of the triangle.
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