Cho hình vuông ABCD có cạnh bằng a. Gọi M, N là 2 điểm trên các cạnh AB, AD sao cho chu vi tam giác AMN = 2A . CM đường thẳng MN luôn tiếp xúc với 1 đường tròn cố định

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv