How do shapes fit together based on their angles and sides?

Shapes fit together based on their angles and sides, just like puzzle pieces that match perfectly when they're right.

Imagine you’re playing with building blocks. Some are square, some are triangle-shaped, like the ones you stack to make a house. If you want them to snap neatly next to each other without any gaps or overlaps, their sides and corners need to match up.

Angles are like the "pointy bits" of shapes. A square has four right angles, which are like perfect 90-degree turns, just like when you make a corner in your room. If two shapes have matching angles, they can sit together nicely. For example, if one shape has a right angle and another has one too, they’ll line up perfectly.

Sides are the straight lines that make up the edges of shapes. A square has four equal sides, think of it like a piece of paper folded into four corners. If two shapes have the same number of sides and those sides are the same length, they’ll fit together just like your favorite puzzle pieces.

When you use both matching angles and sides, shapes lock in place like best friends!