Question 4:
Check whether (5, − 2), (6, 4) and (7, − 2) are the vertices of an isosceles triangle.
Answer:
Let the points (5, −2), (6, 4), and (7, −2) are representing the vertices A, B, and C of the given triangle respectively.
As two sides are equal in length, therefore, ABCis an isosceles triangle.
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