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Question
primary 5 | Maths
| Angles & Geometry
2 Answers Below
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Pls help?
Is it unit?
Date Posted: 1 year ago
Views: 189
Ans is 84cm, but not sure how to get it
There will be four identical sets of lengths there. Do you know which ones?
Hint: all of the triangles are equilateral, so you can mark the sides of the equilateral triangle to show that they are equal
Hint: all of the triangles are equilateral, so you can mark the sides of the equilateral triangle to show that they are equal
Yup I can identify the 4 similar triangle with same length.
Looking at it, 1 side will be 21cm x 3, but how to know the other side? Thanks
Looking at it, 1 side will be 21cm x 3, but how to know the other side? Thanks
OK I think I got it!
21x 5 - 21(because same line)
Correct?
21x 5 - 21(because same line)
Correct?
Yes - this works regardless of the lengths of the triangles.
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Ans is 84cm, but how to get it?
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