If angle B is an obtuse angle,can angle C also be an obtuse angle?Justify.
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No it cannot be possible is the following cases.
Let us take a right triangle. One of its angle is 90°. Thus non of the other two angles can be obtuse because it exceeds 180°.
Let us take an equilateral triangle. Ask the angles are equal and thus are 60° each.
In an isoceles triangle, two angles are equal and thus the second or third angle cannot be obtuse as it exceeds 180°.
In a scalene triangle, also it is the same case.
Let us take a right triangle. One of its angle is 90°. Thus non of the other two angles can be obtuse because it exceeds 180°.
Let us take an equilateral triangle. Ask the angles are equal and thus are 60° each.
In an isoceles triangle, two angles are equal and thus the second or third angle cannot be obtuse as it exceeds 180°.
In a scalene triangle, also it is the same case.
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