Irregular polygons, curves, open shapes all lack congruence of angles and sides.
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Corresponding sides and angles are not all congruent.
False. The angles will be congruent, but the sides not so.
Angles and sides are congruent when they are identical. A shape with four identical sides and angles is a square.
In an isosceles triangle 2 sides are congruent and 2 angles are congruent. In an equilateral triangle all 3 sides are congruent and all 3 angles are congruent also.
corresponding sides and angles are congruent s/a