![]() A tetrahedron, or triangular-based pyramid, has 4 faces, 6 edges and 4 vertices.A cone has 1 face, 1 curved surface, 1 edge and 1 vertex.A hemisphere has 1 face, 1 curved surface and 1 edge.A heptagon or septagon is any shape with 7 sides.A parallelogram has two pairs of parallel lines and opposite equal angles.A trapezium has one pair of parallel lines.A rhombus has two pairs of parallel lines, as well as equal sides and opposite equal angles.A rectangle has two pairs of parallel straight lines and each angle equals 90°.A kite has two pairs of equal-length sides and the diagonals cross at right-angles.A square is a regular quadrilateral and each angle equals 90°.An isosceles triangle has two sides and two angles that are the same.A scalene triangle is an irregular triangle.A right-angled triangle is any triangle with one right angle. ![]()
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