Showing 30 of 30 shapes & concepts
Square
🔢 4 equal sides
✏️ All sides & angles equal
Rectangle
🔢 4 sides
✏️ Opposite sides equal
Triangle
🔢 3 sides
✏️ Angles add to 180°
Circle
🔢 0 sides
✏️ Every point equal from centre
Pentagon
🔢 5 sides
✏️ Angles add to 540°
Hexagon
🔢 6 sides
✏️ Tiles with no gaps
Octagon
🔢 8 sides
✏️ 8 equal sides & angles
Rhombus
✏️ A "pushed-over" square
Cube
🔢 6 faces
✏️ 6 square faces
Sphere
🔢 1 curved surface
✏️ Perfectly round
Cylinder
🔢 2 flat + 1 curved
✏️ Tube with circular ends
Cone
🔢 1 flat + 1 curved
✏️ Circle base, one point
Pyramid
🔢 5 faces (square base)
✏️ Triangle sides meet at top
Cuboid
✏️ 6 rectangular faces
Torus
✏️ Ring / doughnut shape
Equilateral
🔢 3 equal sides
✏️ All angles 60°
Isosceles
🔢 2 equal sides
✏️ 2 equal angles
Scalene
🔢 0 equal sides
✏️ All sides different
Right Triangle
🔢 1 right angle
✏️ Has a 90° corner
Acute Angle
🔢 Less than 90°
✏️ A sharp, small angle
Right Angle
🔢 Exactly 90°
✏️ A perfect square corner
Obtuse Angle
🔢 Between 90° & 180°
✏️ A wide, open angle
Straight Angle
🔢 Exactly 180°
✏️ A straight line
Reflex Angle
🔢 Between 180° & 360°
✏️ More than a straight line
Radius
🔢 Centre to edge
✏️ Half the diameter
Diameter
🔢 Across the circle
✏️ Twice the radius
Circumference
🔢 The distance around
✏️ ≈ 3.14 × diameter
Parallel Lines
🔢 Never meet
✏️ Always same distance
Perpendicular
🔢 Cross at 90°
✏️ Meet at a right angle
Symmetry
🔢 Mirror line
✏️ Both halves match
Geometry Topics