- Know the properties of different shapes;
- Know the inner angles of an equilateral polygon;
- Identify list of 2d geometric shapes, including triangles, quadrilaterals and polygons
List of Geometric Shapes – Triangles for Students
- Equilateral Triangle – Irregular Triangle
- Square – Irregular Quadrilateral
- Pentagon – Irregular Pentagon
- Equilateral Triangle
- Angle: 60°
- Interior angles add up to 180°
Square
- Angle: 90°
- Interior angles add up to 360°
Pentagon
- Angle: 108°
- Interior angles add up to 540°
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Equilateral Triangle
- Angle: 60°
- Interior angles add up to 180°
Square
- Angle: 90°
- Interior angles add up to 360°
Pentagon
- Angle: 108°
- Interior angles add up to 540°
Hexagon
- Angle: 120°
- Interior angles add up to 720°
Heptagon
- Angle: 128.6°
- Interior angles add up to 900°
Octagon
- Angle: 135°
- Interior angles add up to 1080°
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List of Geometric Shapes – Quadrilaterals
List of Geometric Shapes – Quadrilaterals in Mathematics for students to learn. A quadrilateral is a polygon with four sides. A quadrilateral is sometimes referred to as a quadrilateral or a quadrilateral. There are quite a few members of the quadrilateral family.
There are also some members that are subset of other family members! See below if this confuses you!
Squares have 4 equal sides and 4 right angles.
They have 4 lines of symmetry. All squares belong to the rectangle family. All squares belong to the rhombus family. All squares are also parallelograms.
Rectangles have 4 sides and 4 right angles.
They all have 2 lines of symmetry (4 lines if they are also a square!) All rectangles belong to the parallelogram family.
Rhombuses (rhombii) have 4 equal sides.
Both pairs of opposite sides are parallel. They all have 2 lines of symmetry (4 lines if they are a square!). All rhombuses belong to the parallelogram family.
Parallelograms have 2 pairs of parallel sides.
Some parallelograms have lines of symmetry (depending on whether they are also squares, rectangles or rhombuses), but most do not.
Trapezoids US (Trapeziums UK) have one pair of parallel sides.
Some trapezoids have a line of symmetry. Please note the differences between the definitions for US and UK.
Kites have 2 pairs of equal sides which are adjacent to each other.
Convex and Concave Polygons – geometric shapes for kids
Polygons can be concave or convex in their shape.
Convex shapes have all angles less than 180°. Concave shapes have at least one reflex angle greater than 180°
Triangles are always convex.
Related Topics of Mathematics Vocabulary for Kids:
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