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Question

Which of the following is correct aboutthe ABC?


A
Isosceles
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B
Equilateral
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C
Acute
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D
Scalene
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Solution

The correct options are
A Isosceles
B Equilateral
C Acute

Since AB = AC, ΔABC is isoscelesand thus B=C.

By angle sum property,A+B+C=180A+60+60=180 A=180 120 A=60

A=B=C =60

Since all angles of the triangle are equal, ΔABC is an equilateral triangle.

Also, we can see that all angles areless than 90.Therefore, ΔABC is an acute angled triangle.

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