Answer:
their all less than 90 degress so its acute
Step-by-step explanation:
2
SOOO HARD XD
∠1 + ∠3 + 90° = 180°
∠1 + ∠3 = 90°
∠3 = ∠4 (vertically opposite angles)
∠1 + ∠4 = 90°
Therefore, the answer is ∠1 + ∠4
49
35/5=7
7x7=49 seconds
