Question
I think I got forgotten...
What is the perimeter of triangle PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3) in the coordinate plane? (1 point)
21 units
25 units - ??
34 units
36 units
What is the perimeter of triangle PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3) in the coordinate plane? (1 point)
21 units
25 units - ??
34 units
36 units
Answers
Mia
First draw out your triangle .
It gives you the length of two of the side
Vertices (-2,9) and (-2,-3) have the same x values so the line is straight up and down. Find the distance between the y values to find the length of that side
Vertices (-2,-3) and (7,-3) have the same y values. Find the difference in x values to find that length.
Then use the Pythagorean Theorem to find the last side
Then add all the side lengths for the perimeter
It gives you the length of two of the side
Vertices (-2,9) and (-2,-3) have the same x values so the line is straight up and down. Find the distance between the y values to find the length of that side
Vertices (-2,-3) and (7,-3) have the same y values. Find the difference in x values to find that length.
Then use the Pythagorean Theorem to find the last side
Then add all the side lengths for the perimeter
Sandra
36 units, right?
Mia
Yes
Sandra
Thank you