Question

Melissa drew two triangles; triangle ABC and triangle PQR, on a coordinate grid. The coordinates of the vertices of triangle PQR are P(3, 3), Q(3, -1), and R(9, -1). The coordinates of the vertices of triangle ABC are A(2, 9), B(2, 5), C(8, 5).

Which postulate can be used to prove that the two triangles are congruent?

Answer 1

Have you tried drawing the two triangles? Right away, that'll probably help.

Answer 2

No I don't have graph paper anymore. I'm not in geometry, I'm helping a friend. .-.

Answer 3

hint : all we have is coordinates. no angle info is present

Answer 4

Well isn't that helpful -__-

Answer 5

bad problem ;p

Answer 6

I got this for you.

Answer 7

hey i mean you can use SSS postulate only to prove IF they are congruent, you cant use any ANGLE postulates here.

Answer 8

We do x and then y right?
or wait...horizontal and then vertical. I forgot which is which.

Answer 9

Coordinates are written as (x, y)
x is horizontal direction.
y is vertical direction.

Answer 10

question is not asking to find if they are congrunet or not. it is just asking for the postulate you can use.. but its good to know how to plot them anyways :)

Answer 11

Well I know how to plot. Postulates and theorems were the worst in geometry D:

Idunnow D: save meeeee

Migraine=head in severe pain and not fully functioning at normal capacity.

Answer 12

I'd really like you to draw them...

Answer 13

Okay I will

Answer 14

You'd be amazed how much being able to see a problem helps.

Answer 15

Especially in geometry.

Answer 16

Okay I drew them. Somewhat crudely, but it's doable.

Answer 17

I think the postulates for congruent angles (if I remember rights) was like SSS and SAS? or something