Question

Take the original triangle and reflect it. For this step, you will need to identify and label three points on the coordinate plane that are a reflection of the original triangle. Next, use the coordinates of your reflection to show that the two triangles are congruent by the ASA postulate. You can use the distance formula to show congruency for the sides. To show an angle is congruent to a corresponding angle, you can use slope or your compass and straightedge

Answer 1

OK guys I already reflected the triangle over a vertical line I just need to know how do I prove it is congruent using the ASA postulate. and how do i find thre angle?

Answer 2

Hold on let me look at it.

Answer 3

Do you know the distance formula?

Answer 4

Yes i do

Answer 5

I was thinking you could find the points of each triangle and use the distance formula to see that the sides are equal, then use CPTCT which states that all corresponding angles/sides are congruent, but that's not solving by ASA though so sorry >.<

Answer 6

ASA means Angle Side Angle but I don't see how you can find any angles without using trig, but if your willing, we can use that if you want.

Answer 7

It says that i should use slope to find the angle but to do that i dont know what points to use

Answer 8

Ahh, I'm not that good with finding slopes, but there is slope-intercept form you could use I guess. Just look at the graph to find the points. the middle is (x,y) or (0,0) x is going to the right and y is going up or down, left and down go negative and right and up go positive, so just count from the middle.

Answer 9

If i find the slope using wright bank and cubic storage would that be considered finding the angle.

Answer 10

I'm not sure about that, never heard of those before.

Answer 11

If you look at the picture those names are the points

Answer 12

(-2,-3), and (6,3)