In Fig. 4.227, ` A M B C M D ;` determine `M D` in terms of `x ,\ y` and `z` . (FIGURE)

In Figure, /_\ A M B ~ /_\ C M D ; determine M D in terms of x ,\ y and z .

In Fig.4.227, AMBCMD; determine MD in terms of x,y and z.( FIGURE )

In Fig. 4.245, R S D B P Q . If C P=P D=11 c m and D R=R A=3c m . Then the values of x and y are respectively (FIGURE) 12 ,\ 10 (b) 14 ,\ 6 (c) 10 ,\ 7 (d) 16 ,\ 8

In Fig. 4.245, R S D B P Q . If C P=P D=11 c m and D R=R A=3c m . Then the values of x and y are respectively (FIGURE) 12 , 10 (b) 14 , 6 (c) 10 , 7 (d) 16 , 8

In Fig. 4.237, L M=L N=46o . Express x in terms of a ,\ b and c where a ,\ b ,\ c are lengths of L M ,\ M N and N K respectively. (FIGURE)

In Fig. 4.144, we have A B C D E F . If A B=6c m , C D=x\ c m , E F=10 c m , B D=4c m and D E=y\ c m , calculate the values of x and y . (FIGURE)

In Fig. 4.144, we have A B∥ CD∥ EF . If A B=6c m , C D=x\ c m , E F=10 c m , B D=4c m and D E=y\ c m , calculate the values of x and y . (FIGURE)

In Fig. 4.230, each of P A ,\ Q B ,\ R C and S D is perpendicular to l . If A B=6c m , B C=9c m , C D=12 c m and P S=36 c m , then determine P Q ,\ Q R and R S . (FIGURE)

In Fig. 4.60, check whether A D is the bisector of /_A of A B C in the following: (FIGURE) A B=5c m ,\ \ A C=10 c m ,\ \ B D=1. 5 c m and C D=3. 5 c m

In Fig. 4.42, A D is the bisector of /_B A C . If A B=10 c m . A C=14 c m and B C=6c m , find B D and D C . (FIGURE)