What are similar triangles?
Similar Triangles Proportions

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•
Mathematics
•
9th - 12th 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 scale factor in similar triangles?
Back
The ratio of the lengths of corresponding sides of two similar triangles.
3.
FLASHCARD QUESTION
Front
If two triangles are similar, how do you find a missing side length?
Back
Use the proportion of the corresponding sides to set up a ratio and solve for the missing length.
4.
FLASHCARD QUESTION
Front
What is the relationship between the angles of similar triangles?
Back
The corresponding angles of similar triangles are equal.
5.
FLASHCARD QUESTION
Front
How do you determine if two triangles are similar?
Back
Two triangles are similar if they have two pairs of corresponding angles equal (AA criterion) or if the sides are in proportion (SSS or SAS criteria).
6.
FLASHCARD QUESTION
Front
If triangle ABC is similar to triangle DEF, and AB = 4, DE = 8, what is the scale factor?
Back
The scale factor is 2 (8/4).
7.
FLASHCARD QUESTION
Front
Solve for x: 3/10 = (2x + 4)/30
Back
x = 3.
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