ICSE BoardEnglish MediumSTD 6MATHSTriangles (Including Types, Properties and Constructions)1 Mark
Question
In the following, find the marked unknown angle:
✓
Answer
Since, sum of all angles of triangle = 180° 1st Triangle 50° + 80° + b = 180° ⇒ 130°+ &= 180° ⇒ b = 180° – 130° b = 50° II nd Triangle 40° + 45° + a = 180° ⇒ 85° + a = 180° ⇒ a = 180° - 85 a = 95°
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