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Question
In the following figure; AB is the largest side and BC is the smallest side of triangle ABC.
Write the angles xo, yo and zo in ascending order of their values.
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Solution
Given: AB is the largest side and BC is the smallest side of the triangle ABC.
To prove: Arrange xo, yo and zo is ascending order
Proof: AB > AC > BC
Then, 180° - z° > 180° - y° > 180° - x°
⇒ - z° > -y° > - x°
⇒ z° < y° < x°.
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