What is the greatest common monomial factor of 6y and 9xy? A.3 B.3y C. y D.3x​

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a.r'(–3, 1),  s'(–3, 5)b.r'(–1, 3),  s'(–5, 3)c.r'(1, 3),  s'(5, 3)d.r'(5, 3),  s'(1, 3)

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?