1. Triangle ABC is dilated using D as the center of dilation with scale factor 2. The image is triangle $$A′B′C′. Clare says the two triangles are congruent, because their angle measures are the same. Do you agree? Explain how you know.

answer: the correct option is d.

explanation:

it is given that the triangle j'k'l' shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation.

from the given graph it is noticed that k(4,8) and k'(2,4). let origin is defined by o and scale factor is defined by k, then

    (1)

distance formula,

put these values in equation (1).

therefore scale factor is     and option d is correct.

2*2=3

two times two is four

i dont understand what you mean so pls comment

the answer is b.

surface area: 169π

volume: 366π

i got it down.