Plane Shapes and Their Parts 3rd Grade

What is the name of this shape?

• square, with 4 sides

• circle, with no straight sides

• triangle, with 3 sides

How many straight sides does a triangle have?

• 5 sides

• 4 sides

• 3 sides

• 30 sides

How many corners does a triangle have? (Count the circles on each corner.)

• 5 corners (vertices)

• 4 corners (vertices)

• 3 corners (vertices)

• 30 corners (vertices)

Look at the shape. Does it have straight sides or corners?

• No, a circle is round.

• Do not click here.

Count the straight lines. How many straight lines does a pentagon have?

• 6 sides

• 5 sides

• 4 sides

• 50 sides

Count the dots (the corners). How many corners does a pentagon have?

• 50

• 5

• 4

• 3

What is the name of this shape?

• square

• triangle

• circle

How many sides does a square have?

• 0

• 3

• 4

How many vertices does a square have? (Count the dots on the corners.)

• 0

• 3

• 4

How many sides? How many vertices?

• 3 sides, 3 vertices

• 4 sides, 4 vertices

• 5 sides, 5 vertices

• 40 marbles