If you had a Iscocles triangle bca and the vertex c was 21y+13 and <b was 6y+1 would <a be congruent to <b since it states that they are congruent? and what would angle a be and what would y equal???
please help either I am thinking to hard or Im stupid lol :)
I will assume in your triangle , angle A = angle B
so 21y+13 + 6y+1 + 6y+1 = 180
33y = 165
y = 5
then angle A = 31° , angle B = 31° and angle C = 118°
To determine whether angle A and angle B in the isosceles triangle BCA are congruent, we need to consider the definition of an isosceles triangle. In an isosceles triangle, two angles are congruent if and only if the two sides opposite those angles are congruent.
In this case, angle B is equal to (6y+1) and angle C is a vertex angle, so we need to find the length of side BC, which is opposite angle B, as well as the length of side AC, which is opposite angle C.
If the length of side BC is the same as the length of side AC, then the angles opposite those sides (angle B and angle C) will be congruent.
Please provide the lengths of the sides BC and AC, or any further information you have, so we can determine if angle A is congruent to angle B and solve for the value of y and the measure of angle A.