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Page 31 - CT&AI_CLasa_7_Part_1
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    4.  In the following solid, every edge has at least     5.  In triangle ABC, BC is the base.
                         one other edge parallel to  it.  How many           Point P lies on AB and point Q lies on BC such
                         different pairs of PARALLEL FACES are present
                         in the solid?                                       that PQ is parallel to AC. Point R lies on AB
                                                                             and point S lies on AC such that RS is parallel
                                                                             to BC. Lines PQ and RS intersect at a point O
                                                                             inside the triangle.

                                                                             Which of the following quadrilaterals must be
                                                                             a parallelogram?

                               (a)  8                                              (a)  QPAC

                               (b)  7                                              (b)  ORBQ

                               (c)  6                                              (c)  QOSC

                               (d)  5                                              (d)  SAPO

                                                                  Answers
                                                    1. (b)   2. (b)    3. (c)   4. (b)   5. (c)

                                                                                      Parallel and Intersecting Lines  29

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