An answer This triangle can only be an isosceles right triangle.

B Answer: This triangle can be an isosceles triangle, a right triangle, or of course an isosceles right triangle.

An example is given by a = 2bosc.

Get a=2b×(a? +b？ -c？ )/2ab

That is, a=(a? +b？ -c？ )/a

Answer? =a？ +b？ -c？

b？ =c？

That is b = C.

That is, the triangle is an isosceles triangle.