One angle measure in an acute isosceles triangle is 20°. What is the measure of one of the other angles?80°20°140°160°

Answer:Option 2) 20°Step-by-step explanation:Step 1: Write relevant properties of triangle.All 3 sides of a triangle are equal to 180 degrees.In an isosceles triangle, 2 sides and 2 angles are same.Step 2: Calculate another anglesSince it is an isosceles triangle, two sides will be same therefore, 2 angles will be same.Angle 1 = Angle 2 = 20 degrees (because isosceles triangle)Therefore, 20° is the measure of one of the other angles.Option 2!!