Similar Triangles & Proportions

Flashcard
•
Mathematics
•
8th - 12th Grade
•
Hard
+7
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What are similar triangles?
Back
Triangles that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.
Tags
CCSS.8.G.A.2
CCSS.HSG.CO.B.6
2.
FLASHCARD QUESTION
Front
What is the scale factor in similar triangles?
Back
The ratio of the lengths of corresponding sides of two similar figures. It indicates how much one figure is enlarged or reduced compared to the other.
Tags
CCSS.7.G.A.1
3.
FLASHCARD QUESTION
Front
What does AA stand for in triangle similarity?
Back
Angle-Angle; a criterion for triangle similarity stating that if two angles of one triangle are equal to two angles of another triangle, the triangles are similar.
Tags
CCSS.HSG.SRT.A.2
4.
FLASHCARD QUESTION
Front
What does SSS stand for in triangle similarity?
Back
Side-Side-Side; a criterion for triangle similarity stating that if the lengths of the corresponding sides of two triangles are proportional, the triangles are similar.
Tags
CCSS.HSG.SRT.B.5
5.
FLASHCARD QUESTION
Front
What does SAS stand for in triangle similarity?
Back
Side-Angle-Side; a criterion for triangle similarity stating that if two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, the triangles are similar.
Tags
CCSS.HSG.SRT.B.5
6.
FLASHCARD QUESTION
Front
How do you find the measure of an angle in a triangle given the ratio of the angles?
Back
To find the measure of an angle, first determine the total parts of the ratio, then divide 180° by the total parts to find the value of one part, and multiply by the number of parts for the angle.
Tags
CCSS.4.MD.C.7
7.
FLASHCARD QUESTION
Front
If triangle ABC is similar to triangle DEF, and AB = 6 cm, DE = 9 cm, what is the scale factor?
Back
The scale factor is 3/2 or 1.5, since 9 cm (DE) divided by 6 cm (AB) equals 1.5.
Tags
CCSS.8.G.A.2
CCSS.HSG.CO.B.6
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