Question

triangle LMN is similar to triangle QRS. using the image below, prove that parallel lines have the same slope.
picture below
medal and fan will be given

Answer 1

@dumbcow can you help me again with this one please :)

Answer 2

@thomaster can you help me please :)

Answer 3

@zepdrix hi can you help me please

Answer 4

i dont know if i can help with this one... parallel lines have same slope by definition
what is there to prove?

similar triangles have equal angles and proportional sides

Answer 5

@dumbcow ? any ideas

Answer 6

@dumbcow do we have to prove it by finding the slope and if they are the same

Answer 7

@Abhisar hi can you help me with this one and see if what i said is correct

Answer 8

@jdoe0001 can you help me please

Answer 9

@phi hello can you help me please

Answer 10

Is there any more background on this question, because it is close to being in the "goofy" category?

Answer 11

no.. lol thats why im confused

Answer 12

can we use the distance formula or something bc i dont know what else

Answer 13

or find the slope

Answer 14

we start with
prove that parallel lines have the same slope.

Step 1) Show we have 2 parallel lines
Step 2) Show the slopes of these 2 lines are equal

Step 2 is (relatively) easy. Find two points on a line, and find the change in y divided by the change in x
Do that for the other line.
we will get the same number (i.e. same slope)

Answer 15

lines LM and QR are both parallel to the y-axis, and so are parallel to each other. Both of their slopes are undefined.

lines MN and RS are both parallel to the x-axis, and parallel to each other
their slopes are both zero.

Answer 16

lines LN and QS are parallel because both form the same angle with a line parallel to the y-axis (we prove this using similar triangles have congruent angles)

Answer 17

now find two points on line LN, and find the slope of line LN

Answer 18

ok thank you so much!!! @phi

Answer 19

then finally, find the slope for line QS

Answer 20

yesyes thank you