Question

When the triangle is rotated 180°, what will the measure of angle B in the bottom left corner equal? When there is point A: the top left, point B: bottom left corner that is a right angle, point C: is the point on the bottom right.

Answer 1

When the triangle is rotated 180°, the position of point B will be at the top right corner. Since the sum of the angles in a triangle is always 180°, the measure of angle B in the bottom left corner will remain the same after the rotation. Thus, the measure of angle B will still be a right angle.