PLEASE HELP ME WITH THIS!

∠EBA and ∠DBC

∠EBC and ∠DBA

Step-by-step explanation:

This question is emphasizing the vertical angles theorem, which state that the above angles have to be congruent because they are vertical to each other.

So the simple way to figure out which are congruent, is to identify which angles are actually across from each other. Be sure not to look at the wrong angle!

This was the best way to explain this, hopefully you learned something from it.  

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it