Mathematics, 23.10.2020 01:01 ben2005
2. The coordinates of the vertices of ΔARC are A(3,3), R(1,-1), and C(-2,1). Angela is trying to determine whether this shape is a right triangle or not. She has made a mistake in the work below the graph. Explain the mistake and show the correct solution.
Angela’s solution:
slope of AR = (3-(-1))/(3-1)=3/2
slope of RC = (1-(-1))/(-2-1)=2/(-3)=-2/3
slope of AC = (3-1)/(3-(-2))=2/5
Since AR and RC are opposite reciprocal slopes, those two sides are perpendicular, and the triangle is a right triangle.
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2. The coordinates of the vertices of ΔARC are A(3,3), R(1,-1), and C(-2,1). Angela is trying to det...
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