How Shapes Are Alike
Aligned to K.G.B.4 — Common Core State Standards for Mathematics.
What this lesson teaches
We can look at two shapes and tell how they are the same and how they are different.
Worked examples
Example 1
A square and a triangle both have straight sides. But a square has 4 sides and a triangle has only 3.
Example 2
A circle and a ball are both round. But the circle is flat on the paper and the ball is solid in your hand.
Example 3
A square and a rectangle both have 4 sides and 4 corners. On a square all 4 sides match; on a rectangle two are long and two are short.
Practice questions
- How many sides does a triangle have?
- Tell one way a circle and a ball are the same.
- Which shape has more corners: a square or a triangle?
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
En qué se parecen las figuras
Podemos mirar dos figuras y decir en qué se parecen y en qué son diferentes.
Ejemplo 1: Un cuadrado y un triángulo tienen lados rectos. Pero el cuadrado tiene 4 lados y el triángulo solo 3.
Ejemplo 2: Un círculo y una pelota son redondos. Pero el círculo es plano en el papel y la pelota es sólida en tu mano.
Ejemplo 3: Un cuadrado y un rectángulo tienen 4 lados y 4 esquinas. En el cuadrado los 4 lados son iguales; en el rectángulo dos son largos y dos son cortos.
More Geometry lessons
Teach this lesson today
An AI tutor that guides with questions instead of just giving answers — all K–12 core subjects, every child in the family.
Start free — no card required