Answer:
90°, right angles
Step-by-step explanation:
Dividing a circle into parts has no one appearance, unlike other polygons, which makes this easier.
A circle is <em>360° total, so splitting it into four congruent pieces simply makes 360/4</em> = 90° angles. 90° angles are right, by the definition.
Consider this option (all details find in the attachment).
Answer: (-3;4)
-3
1. Add -1.4 to each side.
2. Divide by 0.7 on each side.
Hope this helps