Question

the orthocentre o of a triangle abc is interior of triangle abc . If ob = ac and ad = 10 cm , where ad is an altitude , then what is ab? 1) 20 √2 cm 2) 10 √2 cm. 3) 20 cm 4) 5√2 cm​

Answer 1

The answer is option (2) i.e. 10 root 2 cm