Question: 9. The points A1I, 1, 1], B[2, O, 31, and C[3, 3, 4]. Show that this triangle is a right-angle triangle.
![9. The points A1I, 1, 1], B[2, O, 31, and C[3, 3,](https://s3.amazonaws.com/si.experts.images/answers/2024/06/6679e0aa493c6_4026679e0aa1c0c4.jpg)
![4]. Show that this triangle is a right-angle triangle.](https://s3.amazonaws.com/si.experts.images/answers/2024/06/6679e0aacf57a_4026679e0aaa876d.jpg)
9. The points A1I, 1, 1], B[2, O, 31, and C[3, 3, 4]. Show that this triangle is a right-angle triangle.
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