Answer:
Here, BRX and NJY are two triangles in which,
BR = 30 cm, RX = 40 cm, BX = 60 cm, NJ = 15 cm, JY = 20 cm and NY = 30 cm,
Also, m∠B = m∠N, m∠R = m∠J and m∠X = m∠Y,
By the property of congruence,
,
and
![\angle X \cong \angle Y](https://img.qammunity.org/2020/formulas/mathematics/middle-school/i4na6nv20xswoft1zg7rs1vm7k0bs7n2tz.png)
Thus, By AAA similarity postulate,
![\triangle BRX\sim \triangle NJY](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2y7uc1cn53bj9wkfvy9xd5p5iqcncobpno.png)
Hence, proved.