The figure to the right consists of 6 straight lines. Suppose the following is known:
- ∣A1B1∣=∣A2B2∣, ∣A1B2∣=∣A2B1∣, and ∣B1C∣=∣B2C∣.
- A1B1⊥A2B1 and A1B2⊥A2B2.
- The three acute angles A1,A2, and C have congruent measures.
What is the measure of ∠CB1A2?