Given : mn is an angle bisector of (angle)jmk prove : m(angle)jmn=1/2m(angle)jmk (i need all the reasons)

The complete proof with reasons is explained in step-by-step explaination.

Step-by-step explanation:

Given an angle ∠JMK=m and also MN is the line which bisects the angle ∠JMK that means MN is the line which equally divides the angle ∠JMK.

∠JMK=m

∠JMK = ∠JMN + ∠NMK

It is given that the two angles equally divides by line MN i.e ∠JMN=∠NMK.

⇒  ∠JMK=∠JMN+∠JMN

⇒      m = 2∠JMN        

By mulitiplication property of equality

⇒       ∠JMN=  

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest