Geometry

Question Analysis:
This question assesses angle properties in an isosceles trapezoid.

Key Concept Explanation:
In an isosceles trapezoid, base angles on the same leg are supplementary (sum to 180°).

Step-by-Step Solution:
Identify that the given angle (70°) and its adjacent angle are on the same leg.
Subtract from 180° to find the supplementary angle: 180° − 70° = 110°.

Common Mistakes:
Assuming all angles are equal (on...