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Question

Discuss the nature of the triangles formed by the lines
x + y - 4 = 0 , 3x + y - 4 = 0 , x + 3y -4 = 0

A
Isosceles
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B
scalene
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C
Right angled
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D
None of these
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Solution

The correct option is A Isosceles
Ref Above Image

In ΔAPQ:

AP=AQ=(10).

Hence two sides of a triangle are equal then ΔAPQ is an isosceles triangle.

1368996_1006399_ans_8ba97e9a6d5347d9874083929910b000.png

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