https://file.aiquickdraw.com/mathbot/file/1726674381109ob4k8y20.jpg

From the image, we can see the shape is a right triangle. The original smaller triangle has its vertex points visible, and we can observe where the enlarged triangle's sides are positioned.

Assuming the smaller triangle's vertex starts from the origin, and given the scale factor of 3:
- The vertices of the enlarged triangle will each be three times further from the origin compared to the corresponding vertices of the original triangle.

Using this information, we can determine that the missing vertex of the enlarged triangle will be located in such a position that extends the sides of the triangle while preserving its proportions.

**Coordinate Estimation**:
- Assume the vertex of the original triangle that is at the origin (bottom-left point) is scaled from (0,0) to (0,0).
- Moving upwards and to the right, keeping in line with the triangular shape, the vertex most likely aligns with the coordinate grid.

**Based on Grid Analysis**:
- Points A, B, and C are on the same horizontal line.
- Points D and E are on the same vertical line as C.
- Point F is horizontally aligned with D and E but further right.

We need to find the point which is three times further from the origin (0,0) compared to the corresponding vertex on the smaller triangle. Analyzing the grid, point F matches this description as it is further right and aligns with the extrapolation of the diagonal side of the triangle.

Thus, the letter marking the position of the missing vertex is **F**.

Would you like a more detailed explanation or have other questions about the process? Here are some related questions:
1. How do you calculate scale factors for geometric shapes?
2. Can you explain how transformations affect coordinates in a grid?
3. What is the significance of right triangles in geometry?
4. What methods are used for enlarging shapes on a coordinate grid?
5. How would you solve for missing sides in a similar triangle problem?

**Tip**: When working with enlargement transformations, always verify the scale factor by comparing the lengths of corresponding sides of the original and enlarged figures.

The shape below is enlarged by a scale factor of 3. Three sides of the enlargement are shown. Which letter marks the position of the missing vertex?

Determine the missing vertex of a triangle that has been enlarged by a scale factor of 3 using geometric enlargement principles. This problem involves understanding scale factors, similar triangles, and coordinate geometry. Ideal for students in Grades 7-9.

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