Question

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Answer 1

Step-by-step explanation:

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Answer 2

As bc and mn are parallel to each other F shape is formed due to which angle b is equal to m and similarly angle c equal to n.

So, m= b and n = c.

Upper triangle is right angled, so a will be of 180-20-30 = 130.

A = 130, means b = 50. As b and m are equal, so m = 50.

As in upper right triangle, C = 180 - 60 - 50 = 70, so n = 70 as well.