In an isosceles triangle the base angles are congruent. true false

This statement is false. Because the base angles of an isosceles triangle arecongruent, if one base angle is a right angle then both base angles must be rightangles. It is impossible to have a triangle with two right (90^\circ)angles.

Hi, it will be true. 

I hoped I helped and if you need anymore you could always ask me :)

-Dawn