- 位似Enlargement,我们需要知道位似中心centre of enlargement, 位似比scale factor(SF),即位似中心到像的距离与位似中心到对象的距离之比)。 另外,连续两个或多个变换依次进行,则可以看作一个变换,称为这几个变换的合成变换Combined transformations。 圆和尺规作图circles and constructions 我们需要掌握的是三部分...
根据上面描述的规律,matrix第一列为(1,0)的新位置,还是(1,0);第二列为(0,1)的新位置,变为(0,2)。画个简单的草图: 可以看出,x方向没有任何变化,但是y方向明显拉长了两倍。因此可以推断出本题的答案为: stretch with scale factor 2 in y-direction e.g. describle the transformation represented by ma...
结果1 题目 2. The scale factor of enlargement and centre of enlargement are both given. Copy and complete the diagram. A B OC scale factor of enlargement is -2.5 相关知识点: 试题来源: 解析 飞F C 、《 1 Bì A 反馈 收藏 ...
tobereducedbya scalefactorof0.5. Whatarethenew sidelengthsof triangleJ’K’L’? 4 8 9 J KL J’K’=4x___ K’L’=8x___ J’L’=9x___ SoTriangleJ’K’L’ nowlookslikethis: STOP Thispictureofastopsignisa reductionofarealstop sign…...
On the grid, draw an enlargement of the1triangle with scale factor 相关知识点: 试题来源: 解析 A'(0.5,0.5) B'(2,0,5) C'(2,0.5) ± 1/4 square on base or heightB1isosceles trianglewith base 2 cm orheight 3 cm in any orientationoracute angled triangle with base 2 cm andheight 3...
Divide the distance from the centre of enlargement to any point on the image by the distance to the same point on the object TO FIND THE SCALE FACTOR OR Either divide any side of the image by the equivalent side in the object To find the centre of enlargement Join up the same point on...
Negative scale factors Negative scale factors produce an image on the other side of the centre of enlargement with the shape upside down. Negative scale factors in the higher GCSE only. These are an extension of positive scale factors. E.g. Triangle A has been enlarged by scale factor −3...
The grid shows anarrow.On the grid, draw an enlargement of scale factor 2 of the arrow.Use pointC as the centre of enlargement. 相关知识点: 试题来源: 解析 Correct enlargement withinthe tolerance asshown on the overlay, withvertices joinedAt least 5 vertices correct orThe only error is to...
The scale factor describes how much larger (or smaller) the enlarged shape is compared to the original shape.The scale factor is found by dividing a length of a side of the enlarged shape to the length of the corresponding side of the original shape. ...
结果1 题目 Draw the enlargement of the given triangle, using a scale factor of -2,(-2, 1) as the centre of enlargement.y1412108642-14-12-10-8-6-4-202468101214-2-4-6-810-12-14 相关知识点: 试题来源: 解析 (P(AB)=)74°(PA=)6-5cm 反馈 收藏 ...