NCERT Figure it Out 3 - Q3 - Quadrilaterals
Question: Find the remaining angles in the following trapeziums: (i) PQ || RS with marked 105 deg and 135 deg; (ii) isosceles-type with marked 100 deg.
Answer: (i) Remaining angles 75 deg and 45 deg. (ii) A = B = 80 deg (isosceles trapezium).
Full step-by-step NCERT solution with diagrams on Something by Zero.