Geometry

Question Analysis

This question involves finding the missing angle. The main focus is on understanding the properties of parallel lines cut by a transversal.

 

Key Concept Explanation:

When two parallel lines are cut by a transversal, corresponding angles are in the same relative position at each intersection. The key property is that corresponding angles are congruent.

 

Step-by-Step Solution:

∵ m∥n (Given)

∴ m∠3 = m∠7 (Corresponding Angles Postulate)

∵ m∠3 = 63° (Given)

∴ m∠7 = 63° (Substitution)

 

Click "Show Answer" to reveal the answer and analysis