triangles topic

Question

In an isosceles triangle ABC ,AB=AC=5 and triangle ABC=45(DEGREES) then length of BC is

 

Answer 1

you mean angle ABC is 45 degrees

therefore angle ACB is 45 degrees

you have an isosceles right triangle

the hypotenuse is always the measure of a side times √2

BC=5√2 (or you can use the Pythagorean Theorem to show this also)