Mathematics
Mathematics, 06.12.2020 02:30, bombbomb2157

If Angle 6 is congruent to angle 10 and Angle 5 is congruent to angle 7, which describes all the lines that must be parallel? Lines r and s are crossed by lines t and u to form 16 angles. Clockwise from top left, at the intersection of r and t, the angles are 1, 2, 3, 4; at the intersection of s and t, 5, 6, 7, 8; at the intersection of u and s, 9, 10, 11, 12; at the intersection of u and r, 13, 14, 15, 16.

Only lines r and s must be parallel.

Only lines t and u must be parallel.

Lines r and s and lines t and u must be parallel.

Neither lines r and s nor lines t and u must be parallel.

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If Angle 6 is congruent to angle 10 and Angle 5 is congruent to angle 7, which describes all the lin...

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