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Mathematics 8 Online
OpenStudy (anonymous):

Figure ABCD is a rectangle. The length of segment AE is (2x + 1) units and the length of segment EC is (x + 7) units. What is the length of diagonal BD? Answer 8 units 14 units 26 units 30 units

OpenStudy (anonymous):

Directrix (directrix):

The diagonals of a rectangle bisect each other and the diagonals are also congruent. So, 2x + 1 = x + 7 and x = 6. 2(6) + 1 = 13. If a half diagonal is 13, then the entire diagonal is 26.

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