Joyathan believed that if two triangles are similar with a scale factor of 1:3 and an angel of the similar of the smaller triangle measures 18 degrees then the corresponding angle of the large triangle should measure 54 degrees because it must be 3 times as large. Explain why she's incorrect

Can someone me out here and the tell me the greatest common factor

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?