TBQ - Show that ABC is an isosceles triangle — task. Maths CBSE Live product, Class 9.

In \(ΔABC\), \(AD\) is the perpendicular bisector of \(BC\) (see fig.). Show that \(ΔABC\) is an isosceles triangle in which \(AB = AC\).

Proof:

\(∆ABD≅∆ACD\) [By Congruence rule]

\(AB = AC\) [By ]

Hence \(ΔABC\) is an isosceles triangle

Did you find an error?

8. TBQ - Show that ABC is an isosceles triangle