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Ex 3.3
Ex 3.3, 2 (i)
Ex 3.3, 2 (ii)
Ex 3.3, 2 (iii) Important
Ex 3.3, 2 (iv)
Ex 3.3, 2 (v) Important
Ex 3.3, 3 (i) Important
Ex 3.3, 3 (ii)
Ex 3.3, 3 (iii)
Ex 3.3, 4 Important
Ex 3.3, 5 Important
Ex 3.3, 6
Ex 3.3, 7 Important
Ex 3.3, 8 (i)
Ex 3.3, 8 (ii) Important
Ex 3.3, 9 Important
Ex 3.3, 10
Ex 3.3, 11
Ex 3.3, 12 Important You are here
Last updated at March 23, 2023 by Teachoo
Ex 3.3, 12 (Method 1) Find the measure of ∠P and ∠S if (𝑆𝑃) ̅ ∥ (𝑅𝑄) ̅ (If you find m ∠ R, is there more than one method to find m ∠ P ?) Given ∠R = 90° ∠Q = 130° SP ∥ RQ Since SP ∥ RQ and SR is the transversal So, ∠ R & ∠ S are angles on the same side of transversal ∠ R + ∠ S = 180° 90° + ∠ S = 180° ∠ S = 180° – 90° ∠ S = 90° Since SP ∥ RQ and QP is the transversal So, ∠ P & ∠ Q are angles on the same side of transversal ∠ P + ∠ Q = 180° ∠ P + 130° = 180° ∠ P = 180° – 130° ∠ P = 50° ∴ ∠S = 90° and ∠P = 50° Ex 3.3, 12 (Method 2) Find the measure of ∠P and ∠S if (𝑆𝑃) ̅ ∥ (𝑅𝑄) ̅ (If you find m ∠ R, is there more than one method to find m ∠ P ?) Given ∠R = 90° ∠Q = 130° and SP ∥ RQ We know that Adjacent angles of a trapezium are Supplementary ∠R + ∠S = 180° 90° + ∠S = 180° ∠S = 180° − 90 ∠ S = 90° ∠P + ∠Q = 180° ∠ P + 130° = 180° ∠ P = 180° – 130° ∠ P = 50°