what type of triangle is ABC?

Question

ΔABC ≅ ΔDEF and Line AB ≅ line EF. What type of triangle is ΔABC?

Scalene, Equilateral, Right, or isosceles?

Answer 1

Because the triangles are congruent:

 AB = DE

 

 AC = DF

 

  BC = EF

 

But AB = EF is given.

So AB  = DE = EF = BC

Therefore they are isoceles triangles