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2427.3. Polygon angle sum, convex or concaved quadrangle, polygon diagonale.

Check the correct answer!

The summ of convexed quad's angles is bigger than the summ of triangle's angles.
Grade:
8
Subject
Geometry
Theme
Polygon angle sum, quadrangle.
Subtheme
Polygon angle sum, convex or concaved quadrangle, polygon diagonale.

Solve tasks to find hidden Geo point coordinates

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