Answer:
Step-by-step explanation:
If a quadrilateral has following properties.
(1) All four sides are congruent
(2) Both pairs of opposite sides are parallel
(3) Both the diagonal are equal and perpendicular
Then the given quadrilateral will be a square.
= 2x
d. 540 deg
2 pi radians = 360 deg
(360 deg)/(2pi rad) = 1
3 pi * (360 deg)/(2 pi rad) = 3 * 180 deg = 540 deg
Answer:415320