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Comment on Triangle in the x-y Plane
How is the base length 3
For this question, we're
For this question, we're saying that the side along the y-axis is the base.
So, the base is the side that lies between (0, -2) and (0, 1) on the y-axis.
If you sketch that side, you'll find that it has length 3.
Does that help?
Cheers.
Brent
How do we know the height is
If we say the base of the
If we say the base of the triangle is the side that's on the y-axis, then the height will be the PERPENDICULAR distance from the 3rd vertex to the triangle's base.
Since the line x = 4 is always 4 units from the y-axis, the height of the triangle will always be 4.
It may be easier to understand this concept is we rotate our diagram so that the triangle's base is horizontal: https://imgur.com/xda6hrS
Does that help?