Interactive macro-enabled MS-Excel spreadsheet. Contents: Find interior angles of a triangle. Find interior angles of two triangles. Find interior angles & an obtuse exterior angle of a triangle. Find interior angles & a reflex conjugate outer angle of a triangle. Find interior angles of a quadrilateral. Find interior angles of two quadrilaterals. Find interior angles of a pentagon. Fine interior angles of a hexagon. Find interior & exterior angles of an n-sided regular polygon. Find ∠e & n given part of a regular polygon diagram & ∠i. Find ∠i & n given part of a regular polygon diagram & ∠e. Find ∠e & n given part of a regular polygon diagram & ratio ∠e : ∠i. Find ∠e or ∠i or n given known values of a regular polygon.
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