F.3 Maths questions

Lan

2008-03-28 7:04 am

1. '' The measurement of the height of Himalayas by the scientists. '' --- Is it a example of estimation? (give me the reason)

2. Polygons with all interior angles less than __________ are called convex
polygons.

3. The height / number of storeys of a building is an example of discrete data.

4. It is given that B(3, -2) is an image after rotating point P about the origin
90° anti-clockwise. So what is the coordinates of P?

回答 (1)

myisland8132

2008-03-28 8:12 am

✔ 最佳答案

1. '' The measurement of the height of Himalayas by the scientists. '' --- Is it a example of estimation? (give me the reason)

Yes, it is a example of estimation. Because all measurement of the height of Himalayas is based on indrect method. Since the value mesured by the instrument should have the errors. So the height is just an estimation

2. Polygons with all interior angles less than 180 are called convex
polygons.

3. The number of storeys of a building is an example of discrete data.

4. It is given that B(3, -2) is an image after rotating point P about the origin
90° anti-clockwise. So what is the coordinates of P?

Let the point P is (-2,-3)

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