Checking and securing understanding of congruent triangles (SSS)

12 questions

1. __________ is the multiplier between similar shapes that describes how large one shape is compared to the other.
2. This sector is enlarged by scale factor \frac{1}{3}. The angle in the image is ___°.
3. Each square on this coordinate grid is 1 unit long. This object is enlarged by a scale factor of 3 to make its image. The perimeter of the image is ___ cm.
4. A pentagon has a perimeter of 60 cm. The pentagon is enlarged by scale factor 5. The perimeter of the image is ___ cm.
5. The object is enlarged by a scale factor of \frac{1}{4} to make the image. What is the perimeter of the image?
6. A shape is enlarged by a scale factor of \frac{2}{5} to make its image. The perimeter of the image is 28 cm. The perimeter of the object is ___ cm.
7. Alex says, "If one shape can fit exactly on top of another using __________, __________ or translation, then the shapes are congruent." Select the words that correctly complete Alex's statement.
8. Which of these pairs of shapes look like they are congruent to each other?
9. Some Oak pupils are discussing congruence. Which pupils are correct?
10. The diagram shows a pair of congruent triangles. The length of the side marked x is ___ m.
11. The diagram shows a pair of congruent triangles. Which of these Oak pupils are making a correct statement?
12. Select the statements needed to prove the following: "The diagonal of a rhombus bisects the shape into two congruent triangles."

License: OGL