Topic Details (Notes format)

How to Use Similar Triangles

Subject: Mathematics

Book: Maths Mastery

Triangles are similar if their corresponding angles are equal and side ratios are proportional. For instance, if two triangles share angles 30°, 60°, and 90°, they are similar. This property allows you to deduce unknown side lengths by setting up proportions. Similar triangles arise in map reading (scale factor), architectural design (enlarging or reducing shapes), and trigonometric problems. Mastering similarity fosters an ability to navigate geometric relationships swiftly, making it invaluable for tasks involving scaling or indirect measurements.

Practice Questions

If x:y = 4:5 and y:z = 2:3, what is x:z?

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If the sides of a triangle are 6 cm, 8 cm, and 10 cm, what is the area of the triangle?

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If the sum of three consecutive integers is 96, what are the integers?

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The LCM of 12 and 15 is:

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If a:b = 2:3 and b:c = 4:5, what is a:c?

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What is the sum of all even numbers between 1 and 50?

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What is the sum of the first 20 odd numbers?

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A sphere has a radius of 7 cm. What is its volume?

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If x = 2 and y = 3, what is the value of (x^2 + y^2)?

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If x - y = 5 and x + y = 15, what is the value of x?

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