Parallel Lines by Congruence
Straight segments AD and BC intersect at O. Given OA = OD and OB = OC, prove AB ∥ CD. Use the source arrangement with O between both endpoint pairs.
GANITA PRAKASH · GRADE 7 · PART II · CHAPTER 1
Parallel Lines by Congruence
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Textbook connection: Ganita Prakash · Grade 7 · Part II · Chapter 1 — Geometric Twins · printed page 20