Video

Coordinates of a missing vertex (Full video)

Khan Academy

Supporting grades: 6

Description: Given three of the vertices of a rectangle, can you find the fourth? Alright, well a good place to start, let's just plot these, the three vertices that they give us. So it looks like they're on the first quadrant, so I'm going to focus my coordinate axes on the first quadrant. And let me now, this is going to be my x-axis.

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