Given vectors u=(-2,3) and v=(-6,9) what is the measure of the angle between u and v? a. 0
b. 86
c. 91
d. 180

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3