2D Shapes: Sides and Corners
Counting sides and corners of flat shapes
2D Shapes: Sides and Corners
Counting sides and corners of flat shapes
Math - Grade K-1
- 1
Look at a triangle. How many sides does it have?
A triangle has 3 sides. - 2
Look at a square. How many corners does it have?
Corners are the pointy places where two sides meet.
A square has 4 corners. - 3
Circle the shape that has 0 corners: circle, triangle, or rectangle.
A corner is a point. Look for the shape with no pointy places.
The circle has 0 corners. - 4
A rectangle has 4 sides. How many corners does a rectangle have?
A rectangle has 4 corners. - 5
Count the sides on a circle. How many straight sides does it have?
A circle is round all the way around.
A circle has 0 straight sides. - 6
Which shape has 3 corners: triangle or square?
A triangle has 3 corners. - 7
Look at a rectangle. Count the sides. How many sides does it have?
Count each straight line around the outside.
A rectangle has 4 sides. - 8
Draw a shape with 4 sides and 4 corners. What is the name of one shape you could draw?
Think about a window or a door.
One shape with 4 sides and 4 corners is a square. A rectangle is also correct. - 9
A shape has 3 sides and 3 corners. What shape is it?
The shape is a triangle. - 10
Look at the shape with four equal sides. What is its name?
A square has 4 sides that are all the same length.
The shape is a square. - 11
Which has more corners, a triangle or a circle?
A triangle has more corners because it has 3 corners, and a circle has 0 corners. - 12
Look at a shape that is long like a door. It has 4 sides and 4 corners. What shape is it?
A rectangle can be tall or wide.
The shape is a rectangle. - 13
How many corners does a triangle have?
A triangle has 3 corners. - 14
Circle all the shapes with 4 corners: square, circle, rectangle, triangle.
Count only the pointy places on each shape.
The square and the rectangle have 4 corners. - 15
Draw a circle. How many corners does your circle have?
A circle has 0 corners.