One angle of an isosceles triangle measures 140°. Which other angles could be in that isosceles triangle? Choose all that apply.
140
61
20°
7

In terms of x, find an expression that represents the area of the shaded region. the outer square has side lengths of (x+5) and the inner square has side lengths of (x-2), as shown. area: a1 x + a2 square units submit