The best and most correct answer among the choices provided by your question is the second choice or letter B.
<span> CM is perpendicular to AB because the triangles are isosceles and scalene.
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Given that ABC is a right triangle right angled at C. AB is hypotenuse.
Also AC=BC
To prove that CM is perpendicular to AB
The reason that CM is perpendicular to AB is in an isosceles triangle and right we have the perpendicular from the top to base will be a perpendicular line to the base.
