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MATHEM LINES AND ANGLES 2. In Fig. 6.29....

MATHEM LINES AND ANGLES 2. In Fig. 6.29. if AB II CD, CD || EF and y: z= 3:7 find.x. 6.7 Angle Sum Property In the earlier classes, you ha of a triangle is 180°. We ca related to parallel lines, Theorem 6.7 : The sum o Proof: Let us see what is at is the hypothes

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