Length: 0:32Perimeter of a RectangleA bed is 5 m long and 3 m wide. What is the perimeter?Grade 4Learning video 52 · Geometry
Lines of Symmetry
Watch and solve along: the video pauses when the question comes. Type your answer, then watch the solution.
Read the story
A line of symmetry splits a shape into two matching halves.
A rectangle has 2: one up and down, one across.
The diagonal is not one! The halves don't match.
How many lines of symmetry does a square have?
Answer and working
Correct! 4: up and down, across, and both diagonals.
Geometry
Length: 0:32Perimeter of a RectangleA bed is 5 m long and 3 m wide. What is the perimeter?Grade 4
Length: 0:31Area4 rows of 6 squares: what is the area?Grade 4
Length: 0:29Perimeter of a SquareA square has 7 cm sides. What is the perimeter?Grade 4Your child's answers stay on this device. They are neither saved nor sent anywhere, and no sign-up is needed.