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An isosceles trapezoid is a trapezoid whose legs are congruent.
Isosceles trapezoids have two main properties.
| Property | Justification |
|---|---|
| The diagonals are congruent. | Isosceles Trapezoid Diagonals Theorem |
| Each pair of base angles is congruent. | Isosceles Trapezoid Base Angles Theorem |