What Are Shape Nets?
Definition: A net is a 2D representation of a 3D shape, showing all its faces unfolded.
Key Idea: You can fold a net to recreate the 3D shape. For example, think of a flat ca...
Numeracy
Key Features of 3D Shapes
Three Dimensions: Length, width, and depth.
Surface Area: The total area of the shape's outer surfaces.
Volume: Space inside the shape (useful for filling or capacity ...
Numeracy
1. What is Area?
Definition: The amount of space inside a shape.
Units: Measured in square units (e.g., cm², m², in²).
Applications: Useful for practical tasks like painting walls, tiling fl...
Numeracy
Perimeter and circumference measure the total distance around a 2D shape. While "perimeter" applies to all shapes, "circumference" is specific to circles. These calculations are vital for tasks rangi...
Numeracy
1. Key Two-Dimensional Curved Shapes
Circles:
Properties:
Diameter: Line through the center.
Radius: Half the diameter.
Circumference: The circle's outer boundary.
Key Formulas:
Circu...
Numeracy
Transformations involve changing the position, size, or orientation of shapes on a 2D plane. Here's a summary of key concepts:
1. Congruence
Definition: Two shapes are congruent if they have the ...
Numeracy
A polygon is a two-dimensional (plane) shape made up of straight sides. Polygons are fundamental in geometry and have real-life applications in architecture, engineering, construction, and more.
Ke...
Numeracy
1. What is an Angle?
Definition: An angle is formed when two rays meet at a point.
Representation: Often shown as an arc between the two rays.
Measurement Unit: Degrees ((°)) or sometimes radi...
Numeracy
These coordinate systems are alternatives to the Cartesian system for describing points, particularly when dealing with curved lines, surfaces, or 3D spaces. Each is suited to specific applications, ...
Numeracy
1. What Are Cartesian Coordinates?
Used to locate points in 1D, 2D, and 3D spaces.
A point represents a unique position but has no size.
Points are described by coordinates relative to known re...