AP EAMCET · Maths · Three Dimensional Geometry
The points \((5,-4,5),(-3,-3,2)\) and \((-1,-6,8)\) form ......
- A an isosceles triangle
- B an equilateral triangle
- C a right-angled isosceles triangle
- D a right-angled triangle
Answer & Solution
Correct Answer
(A) an isosceles triangle
Step-by-step Solution
Detailed explanation
Given points \(A(5,-4,5), B(-3,-3,2)\) and \[ \begin{aligned} & C(-1,-6,8) \\ & \therefore \quad A B=\sqrt{64+1+9}=\sqrt{74} \\ & B C=\sqrt{4+9+36}=7 \\ & \text { and } \quad C A=\sqrt{36+4+9}=7 \end{aligned} \] \(\because\) Length of sides \(B C\) and \(C A\) are equal, but…
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