In fig 6.31, if PQ||ST ∠ PQR = 110° and ∠ RST = 130° find ∠QRS | Imp.[Q4]

Exercise 6.2 class 9 Question 4
In the figure 6.31, if PQ || ST, ∠PQR = 110 and angle ∠RST= 130, find ∠QRS.

Hint 💡
Theorem 6.2
If a transversal intersects two parallel lines, then each pair of alternate interior angles is equal.

Theorem 6.4
If a transversal intersects two parallel lines, then each pair of interior angles on the same side of the transversal is supplementary.

Note📝
The above question is taken from NCERT class 9 chapter Lines and Angles exercise 6.2 question 4.

Practice📖:
In the figure, if AB||CD, EF⊥CD and ∠GED=126° , find ∠AGE, ∠GEF and angle ∠FGE.

Theorem 6.1
If two lines intersect each other, then the vertically opposite angles are equal.

Exercise 6.1 class 9

Basic concepts of lines and angles.

Revise✍🏻:
Number Systems

Polynomials

Lines and Angles

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[RHAcademy_]

Do you know any other way of finding the angle QRS ?
Let us know in the comment section


Revise✍🏻:
Number Systems

[himanshi]

so nice explanation.. after watching so many video.. this vdo let me understand this question

[himanshumishramishranakfut]

Gjb aaj to samajh aa gya nice video 🤘🤘🤘🤘