Dilations Instruction
Active
Exploring Dilations of Lines
Try it
The diagram shows a dilation with scale
factor 2. Point P is the center of dilation,
line l is the pre-image, and line m is the
image
Move P to explore how the location of P
affects the dilation.
1. When P is not on line 2, the image
and pre-image are
Check

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem