Congruent shapes are shapes that have the same shape and same size.
Each pair above is made of congruent shapes.
Congruent shapes can have different color, or rotation. They can even be flipped.
As long as they have the same shape and size, they're still called congruent.
If you put the blue circle above on top of the green one, the blue circle completely covers the other circle.
The blue and green circles have:
1️⃣ the same shape ✅
2️⃣ the same size ✅
These shapes are congruent.
Are these circles congruent?
Let's check:
1️⃣ Are they the same shape?
Yes, they're both circles. ✅
2️⃣ Are they of the same size?
One circle is small. The second circle is bigger.
No, they're not the same size. ❌
These shapes are not congruent.
Are they congruent?
1️⃣ Are they the same shape?
They both have the same number of sides.
But the first shape has 4 equal sides, while the sides of the second shape are not all equal.
So no, they're not the same shape. ❌
These shapes are not congruent.
Tip: We don't look at the color of the shapes when checking for congruence.
Are these pentagons congruent?
Let's check.
1️⃣ Are they the same shape?
They both have 5 sides, so yes.
2️⃣ Are they the same size?
Probably, but we're not sure.
The purple shape doesn't look exactly like the green one.
What if we rotate the green shape?
Do their sizes look the same now?
Yes, they have the same size and shape.
This means that these shapes are congruent. ✅
Tip: Congruent shapes match even if you flip, slide, or turn them.
Excellent job learning about congruent shapes.
Now, complete the practice to master recognizing congruent shapes on your own.