Select all lines that could be the image of line by a dilation.

Dilate line with a scale factor of 2. The image is line . Which labeled point could be the center of this dilation?

Line f with point C to the right of the center. Line g above line f with point B to the right of the center. Point A is above line g and to the left of point B. Point D is below line f and to the left of point C.

A polygon has a perimeter of 18 units. It is dilated with a scale factor of . What is the perimeter of its image?

Solve the equation. 

Here are some measurements for triangle  and triangle :

• Angle  and angle  are both 30 degrees
• and both measure 3 units
• and both measure 2 units

Clare says she knows that triangles and  might not be congruent.

Construct 2 triangles with the given measurements that aren't congruent. Explain why triangles with 3 congruent parts aren't necessarily congruent.