Question

Triangle ABC was dilated using the rule DO,4. Triangle A'B'C' is the result of the dilation.

Point O is the center of dilation. Triangle A B C is dilated to create triangle A prime B prime C prime. The length of O B is three-fourths.

What is OB'?

1.5 units
3 units
4.5 units
6 units
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Answer 1

(b) 3 units

Explanation:

You want to know the length of OB' when OB = 3/4 and ∆ABC is dilated about point O by a factor of 4.

Dilation

The dilation factor multiplies every length.

If OB is 3/4, then OB' is 4(3/4) = 3.

The length of OB' is 3 units.

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