Length: 0:30The Mirror PointHow many squares is the point from its mirror point?Grade 4Learning video 65 · Geometry
Perimeter of a Triangle
Watch and solve along: the video pauses when the question comes. Type your answer, then watch the solution.
Read the story
For a triangle, too, the perimeter is the way all around.
We add all 3 sides: 4 plus 5 plus 6 centimeters.
The perimeter is 15 centimeters.
All 3 sides are 7 cm long. What is the perimeter?
Answer and working
Correct! 3 times 7 is 21 centimeters.
3 × 7 = 21
Geometry
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