• # question_answer A triangle is constructed as shown in the figure. Which of the following is not correct about $\Delta DEF$? A)  $\Delta DEF$ has all its sides equal.B)  $\Delta DEF$ is an acute angled triangle.C)  $\Delta DEF$ is a scalene triangle.D)  $\Delta DEF$ is not an equilateral triangle.

Correct Answer: A

Solution :

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