(2) Answers
The sum of each pair of sides has to be greater than the third sides. 8 + 15 > x 23 > x ; x < 23 x + 8 > 15 x > 7 ; x + 15 > 8 x > -7 Omit because it is negative. So: x has to be greater than 7 and less than 23. 7 < x < 23 # 23 The legs are congruent # 24 D # 25 D # 26 D # 27 3 < x < 17 I can't see the bottom options but it has to be between 3 and 17 and cannot be 3 or 17.
The sum of each pair of sides has to be greater than the third sides.
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