Geometry

Question Analysis:
This question requires understanding of angle properties in kites and quadrilateral angle sums.

Key Concept Explanation:
A kite has one pair of equal opposite angles (angles between unequal sides)
The sum of all interior angles in any quadrilateral is 360°

Step-by-Step Solution:
Identify given angles: A = 110°, C = 70°
Recognize that angles B and D must be equal (kite property)
Calculate: 110° + 70° + 2x = 360° → 2x = 180° → x = 90°

Common Mistak...