๐ What is a Triangle?
A triangle is a shape with three sides and three angles. Think of a slice of pizza or a road sign. They often look like they're pointing up or sideways!
- ๐งฎ Each of the three corners of a triangle is called a vertex.
- ๐ The sides of a triangle can be all the same length, or they can be different lengths.
- โฐ๏ธ Triangles can look different depending on the lengths of their sides and the sizes of their angles.
๐ฉ What is a Rectangle?
A rectangle is a shape with four sides and four right angles (square corners). Think of a door or a book. Opposite sides of a rectangle are always the same length.
- ๐งฑ Rectangles have two long sides and two short sides.
- ๐ All four angles in a rectangle are 90 degrees. We call these 'right angles.'
- ๐ช Squares are special kinds of rectangles where all four sides are the same length.
๐ Triangles vs. Rectangles: A Comparison
| Feature |
Triangle |
Rectangle |
| Number of Sides |
3 |
4 |
| Number of Angles |
3 |
4 |
| Type of Angles |
Can be acute, right, or obtuse |
All are right angles ($90^{\circ}$) |
| Opposite Sides Equal |
Not Applicable |
Yes (Two pairs of equal sides) |
๐ก Key Takeaways
- โ Triangles have 3 sides and 3 angles, while rectangles have 4 sides and 4 angles.
- ๐ Rectangles always have right angles ($90^{\circ}$), but triangles can have different kinds of angles.
- โ๏ธ Look around you! Can you spot triangles and rectangles in your classroom or at home?