Dilation creates similar triangles, all the others are isometries, making congruent triangles. Choice a.
According to the definition, is a parabola is in the standard form of (x-h)^2<span>=4p(y-k), then the directrix is y=k-p. In this case, the parabola function is x^2=8y, so h=0, p=8/4=2, k=0. Plug the values of h, p, k, into y=k-p, the directrix is y=-2.</span>
Answer:
79°
( vertically opposite angles are equal. So, <AOB = < A'OB' )
Answer:
a.) 11
b.) 13.5
c.) m/2
d.) 7.5+m/2
Step-by-step explanation:
Put the triangle inside of each other lining up the 90° angle corners.
