In the space referred to a direct orthonormal system (0,i, j, k), given the points: A (1,1, 2), B (1, 2, 1), C (2, 1, 1) and D (2, 2, 3). 1. Determine the nature of triangle ABC. 2. Verify that the vector AD is a normal vector of the plane (ABC). 3. a) Calculate the coordinates of vector AB ^ AC b) Deduce the area of triangle ABC.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.3: Lines And Planes
Problem 48EQ
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In the space referred to a direct orthonormal system (0,i, j, k), given the points:
A (1,1, 2), B (1, 2, 1), C (2, 1, 1) and D (2, 2, 3).
1. Determine the nature of triangle ABC.
2. Verify that the vector AD is a normal vector of the plane (ABC).
3. a) Calculate the coordinates of vector AB ^ AC
b) Deduce the area of triangle ABC.
4. Calculate the volume of tetrahedron DABC.
5. Let M (m+1; 2m-3; m+2) be a point. Determine m so that the point M belongs to the
mediator plane of the segment [AB].
Transcribed Image Text:In the space referred to a direct orthonormal system (0,i, j, k), given the points: A (1,1, 2), B (1, 2, 1), C (2, 1, 1) and D (2, 2, 3). 1. Determine the nature of triangle ABC. 2. Verify that the vector AD is a normal vector of the plane (ABC). 3. a) Calculate the coordinates of vector AB ^ AC b) Deduce the area of triangle ABC. 4. Calculate the volume of tetrahedron DABC. 5. Let M (m+1; 2m-3; m+2) be a point. Determine m so that the point M belongs to the mediator plane of the segment [AB].
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