Geometry Flashcards: Dilations Keep Lines Parallel

Study Dilations Keep Lines Parallel in Geometry with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Find the image of $y=-3x+9$ under dilation centered at $O=(0,0)$ with scale factor $k=2$ .

Tap card or press Space to flip

ANSWER

$y=-3x+18$ . The $y$ -intercept becomes $k \cdot 9 = 2 \cdot 9 = 18$ .

1 / 54

Geometry: Similarity Transformations

AA Criterion from Similarity Transformations56 cards

Dilations Change Length by Scale Factor53 cards

You are hereDilations Keep Lines Parallel54 cards

All flashcards

54 cards

What this deck covers

This deck focuses on Dilations Keep Lines Parallel, giving you a quick way to review the definitions, rules, and examples that matter most for Geometry.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 9Practice questions for this set

In a coordinate plane, line

\ell_1

passes through points

(1, 4)

and

(5, 8)

, while line

\ell_2

passes through points

(2, 3)

and

(6, 7)

. A dilation with center

(0, 0)

and scale factor

2

is applied to both lines. Which statement about the images

\ell_1'

and

\ell_2'

is correct?

Choose an answer

Keep your progress across every deck

Free account · cards you mark are saved to it