47. ThIn triangle ABC, D and E are points on the sides AB and AC respectively. For each of the following cases show that DE is parallel to BC: (i) AB=10.8cm, BD=4.5cm,
![SOLVED: Show that the points A(-1,3), B(3,11), and C(5,15) are collinear by showing that d(A, B)+d(B, C)=d(A, C) SOLVED: Show that the points A(-1,3), B(3,11), and C(5,15) are collinear by showing that d(A, B)+d(B, C)=d(A, C)](https://cdn.numerade.com/previews/ccc7d3ab-15bd-47db-b8c9-4130cc57a3b3_large.jpg)
SOLVED: Show that the points A(-1,3), B(3,11), and C(5,15) are collinear by showing that d(A, B)+d(B, C)=d(A, C)
![9 Deductive Geometry 9.1 Introduction to Deductive Reasoning and Proofs 9.2 Deductive Proofs Related to Lines and Triangles 9.3 Deductive Proofs Related. - ppt download 9 Deductive Geometry 9.1 Introduction to Deductive Reasoning and Proofs 9.2 Deductive Proofs Related to Lines and Triangles 9.3 Deductive Proofs Related. - ppt download](https://slideplayer.com/slide/12876522/78/images/38/Example+14T+Solution%3A+9+Deductive+Geometry.jpg)