What are similar triangles?
Similar Triangles and Proportions Flashcard

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Mathematics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Triangles that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.
2.
FLASHCARD QUESTION
Front
What is the definition of proportion?
Back
A proportion is an equation that states that two ratios are equal.
3.
FLASHCARD QUESTION
Front
If two triangles are similar, what can be said about their corresponding sides?
Back
The lengths of their corresponding sides are in proportion.
4.
FLASHCARD QUESTION
Front
How do you solve a proportion?
Back
Cross-multiply the terms and then solve for the unknown variable.
5.
FLASHCARD QUESTION
Front
What is the formula for finding the length of a side in similar triangles?
Back
If triangle ABC is similar to triangle DEF, then AB/DE = AC/DF = BC/EF.
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles of similar triangles?
Back
The corresponding angles of similar triangles are equal.
7.
FLASHCARD QUESTION
Front
If triangle ABC is similar to triangle DEF and AB = 4, DE = 8, what is the ratio of their areas?
Back
The ratio of their areas is (AB/DE)² = (4/8)² = 1/4.
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