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# Hello watch

1. Hi, I'm not trying to spam the forum, it's just TSR won't allow me to post a link of this video.

In this video, ExamSolutions subtracts 2 from 7 to find the height of the triangle. I don't understand why he did this someone please explain.

This is C1 coordinate geometry

2. (Original post by animemaniac132)
Hi, I'm not trying to spam the forum, it's just TSR won't allow me to post a link of this video.

In this video, ExamSolutions subtracts 2 from 7 to find the height of the triangle. I don't understand why he did this someone please explain.

This is C1 coordinate geometry

The height is given by the difference in x-coordinates of the two points. Which is 7 and 2 (since it's just the horizontal distance between those two points).
3. Ok... would that been the case for finding the base, just finding the difference in y values
4. (Original post by animemaniac132)
Ok... would that been the case for finding the base, just finding the difference in y values
Since the base is a vertical lines, yes, it would be the difference in the y values of C and B. (8-0 = 8)

Quote me when you reply to me so I get a notification, just press the reply button!
5. (Original post by Zacken)
Since the base is a vertical lines, yes, it would be the difference in the y values of C and B. (8-0 = 8)

Quote me when you reply to me so I get a notification, just press the reply button!
thank you
6. (Original post by animemaniac132)
thank you
Welcome!

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