For two triangles to be similar the sides need to have the same ratio.
A and C are the correct answers.
multiply 5 times 21 then 4 times 15 and then add them together
Answer:
A i believe
Step-by-step explanation:
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You have to evaluate the slopes of these lines. For line AB you have a slope of

For line CD you have a slope of

Because the slopes are equal and the two lines are not one and the same, they are parallel.
Answer:
The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run.
The slope formula is often shortened to the phrase “rise over run.”