In an isosceles triangle, the third angle is ten times the measure of each of the congruent angles. what is the measure, in degrees, of the largest angle? explain how you got this answer.

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)