Question

А
9. In figure, AB|| PQ || CD,
AB = x units, CD = y
units and PQ = z units,
с
Х
1
prove
1 1
that
+
X
у
y
Z
N
B​

Answer 1

constuct line from mid of ab to mid of cd if touches the top of pq

hence proved

Answer 2

hope it works for the best ✨