Length: 0:32Quarter TurnsThe pointer makes 3 quarter turns. How many degrees is that?Grade 4Learning video 87 · Geometry
Mirror and Complete
Watch and solve along: the video pauses when the question comes. Type your answer, then watch the solution.
Read the story
A shape is symmetrical. The line of symmetry runs down the middle.
To the left of the line, 5 squares are colored.
We mirror every square to the right. There are 5 on the right too.
Five plus 5 is 10. The whole shape has 10 squares.
To the left of the line, 7 squares are colored. How many squares does the whole shape have?
Answer and working
Correct! 7 plus 7 is 14. The whole shape has 14 squares.
7 + 7 = 14
Geometry
Length: 0:32Quarter TurnsThe pointer makes 3 quarter turns. How many degrees is that?Grade 4
Length: 0:30The Mirror PointHow many squares is the point from its mirror point?Grade 4
Length: 0:29Lines of SymmetryHow many lines of symmetry does a square have?Grade 4Your child's answers stay on this device. They are neither saved nor sent anywhere, and no sign-up is needed.