Question

Calculate the angels marked with small letters solve only 2 and 4. and leave it if you don't know​

Answer 1

Step-by-step explanation:

2. In the rectangle SRQP, We have,

Diagonal PR is a straight line, so

angle POQ + angle ROQ = 180°

or, 120° + ROQ = 180°

or, ROQ = 60°

We know that Diagonals of the rectangle have equal length and bisect each other.

PR = SQ

or, PR/2 = SQ/2

or, OR = OQ

In the triangle ROQ,

a + angle RQO + angle ROQ = 180°

a= angle RQO {OR = OQ, so triangle ROQ is isosceles triangle in which angle a and angle RQO is equal}

a + a + ROQ = 180°

or, 2a + 60° = 180°

or, 2a = 120°

or, a = 60°

since, SRQP is rectangle

so angle R = 90°

angle b + angle a = 90°

angle b + 60° = 90°

angle b = 30°

Answer 2

Answer:

angle b =30° . and this the right answer