- For the first figure (dilate by 2 using center (0,0)): Multiply each vertex coordinate by 2. The original vertices are approximately (-4,0), (2,1), and (4,1). The dilated vertices are (-8,0), (4,2), and (8,2). Plot these points and connect them to form the new triangle.
- For the second figure (dilate by 1/4 using center (0,0)): Multiply each vertex coordinate by 1/4. The original vertices are approximately (-8,0), (4,6), and (4,-6). The dilated vertices are (-2,0), (1,1.5), and (1,-1.5). Plot these points and connect them to form the new triangle.
- For the third figure (dilate by 1/4 using center (0,0)): Multiply each vertex coordinate by 1/4. The original vertices are approximately (-6,0), (6,0), and (0,4). The dilated vertices are (-1.5,0), (1.5,0), and (0,1). Plot these points and connect them to form the new triangle.
- For the fourth figure (dilate by 2 using center (0,0)): Multiply each vertex coordinate by 2. The original vertices are approximately (0,2), (1,0), and (-1,0). The dilated vertices are (0,4), (2,0), and (-2,0). Plot these points and connect them to form the new triangle.
Parent Tip: Review the logic above to help your child master the concept of dilations on the coordinate plane worksheet.