Question

One angle of an isosceles triangle measures 98º. Which other angles could be in that

isosceles triangle? Choose all that apply.
72°
620
41°
30°
Submit

Answer 1

an isosceles triangle is a triangle with two twin sides, and therefore two twin angles.

if one angle is 98°, well, we can't have another 98° angle because that makes 98+98 = 196°, and the sum of all interior angles in a triangle cannot be more than 180°.

so the other remaining angles must be the twin smaller angles, namely 180 - 98 = 82, and each twin takes half of that, namely 41°.