Since it is 1/5 of original length (13cm)
13cm * 1/5 = 2.6 cm
Move the decimal 2 places to the left and add zeros where it’s empty
Hey there!
In this picture, we have many pairs of adjacent angles:
1 and 2
2 and 4
4 and 3
3 and 1
This is because these pairs are being connected by a vertex and a side.
Hope it helps and have a great day!!!