Similarity in Trapezoids and Thales's Theorem

MathematicsGeometryMediumLGS

Published:

3-

Find $x$ based on the figure.

Left side segments: $3$ and $6$.

Parallel bases: $x$, $10$, and $15$.

$x = ?$

This question includes visual content: A trapezoid or triangle fragment with three horizontal parallel lines. The top parallel line segment is labeled '$x$'. The middle parallel line segment is labeled '10'. The bottom parallel line segment is labeled '15'. On the left slanted side, the segment between the top and middle parallel lines is labeled '3', and the segment between the middle and bottom parallel lines is labeled '6'. To the right of the figure, it says '$x=?$'. At the top left, there is a label '3-'.

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Step by Step Written Solution

1
Step 1

Merhaba! Bu soruda bir yamuk üzerindeki paralel doğru parçalarını ve benzerlik oranlarını kullanarak x değerini bulacağız.

Benzerlik ve Oran-Orantı

2
Step 2

Şekilde birbirine paralel üç doğru parçası görüyoruz. Yan kenarlar üzerindeki oranlar, paralel tabanlar arasındaki artış miktarıyla doğru orantılıdır.

x101536
3
Step 3

Paralel doğrular arasındaki mesafeler üç ve altı birim olarak verilmiş. Bu, tabanların artış hızının da bu oranlarla ilişkili olduğunu gösterir.

Oran = 3 / 6 = 1 / 2

4
Step 4

Tabanlar arasındaki farkları hesaplayalım. En alttaki taban on beş, ortadaki ise ondur. Aradaki fark beştir.

$$15 - 10 = 5$$
5
Step 5

Bu beş birimlik artış, yan kenardaki altı birimlik parçaya karşılık geliyor.

6 birimde 5 artmış.

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About This Question

Subject
Mathematics
Topic
Geometry
Difficulty
Medium
Exam
LGS
Question Type
Open Ended

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