Answer:
14 :)
Step-by-step explanation:
all you need to do is add the ones
Answer: The acute angle between diagonals is 50
Step-by-step explanation:
Red angle = 50 because An exterior angle of a triangle is equal to the sum of the opposite interior angles (pink angles).
Alternatively:
Green angle is 130 by sum of interior angles of a triangle.
Red angle is 50 by Adjacent angles
Perimeter 430
Length 172
172 next
430 last(after the =)