Triangles — Formula Sheet
ICSE · Class 6 · Mathematics
6 formulas from Triangles (ICSE Class 6 Mathematics) on one page, grouped by topic. Includes Right. Part of the ICSE Class 6 Mathematics syllabus.
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Formulas and Key Relations
Formulas and Properties
∠A + ∠B + ∠C = 180°
Exterior Angle = ∠A + ∠B
Exterior Angles of a Triangle
Each exterior angle is adjacent to an interior angle and forms a linear pair (sum = 180°).
Sum of interior angles = 180°
Exterior angle + adjacent interior angle = 180°
Right
one angle = 90°
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