If in a triangle two of it’s angles are 35° and 45° respectively. What is the measure of it’s third angle?(a) 35°(b) 45°(c) 90°(d) 110°This question was posed to me in examination.This interesting question is from Classification of Polygons in division Quadrilaterals of Mathematics – Class 8

If in a triangle two of it’s angles are 35° and 45° respectively.

1.	If in a triangle two of it’s angles are 35° and 45° respectively. What is the measure of it’s third angle?(a) 35°(b) 45°(c) 90°(d) 110°This question was posed to me in examination.This interesting question is from Classification of Polygons in division Quadrilaterals of Mathematics – Class 8
Answer» RIGHT choice is (d) 110° For explanation I WOULD say: In a triangle the sum of all ANGLES is 180°. So, now we can calculate the third angle. Angle 1 + Angle 2 + Angle 3 = 180° ∴ 35° + 45° + Angle 3 = 180° ∴ Angle 3 = 110°.

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