How To Find 2 Missing Sides Of A Triangle

Videos, worksheets, examples, and solutions to help Class 8 students learn how to find missing sides and angles of similar triangles.

Similar triangles are triangles that take exactly the same shape, but are not necessarily the aforementioned size. When two triangles are similar, the ratios of the lengths of their corresponding sides are equal. We tin can use these properties of similar triangles to find missing sides and angles.

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More than topics on similar triangles

Coinciding and Like Triangles
Make up one's mind congruent and like triangles. Use similar triangles to solve problems.
Congruent triangles have the aforementioned size and the aforementioned shape. Corresponding sides are the aforementioned length and the corresponding angles are congruent.

Similar triangles take the verbal aforementioned shape but non necessarily the same size.
The conditions for similarity are
1. Corresponding angles must have the same measure out.
ii. Respective sides must be proportional. (That is the ratios of their corresponding sides must be equal)

Examples:
i. The two triangles are like. Determine the measure of bending A and angle B.

2. The two triangles are like. Determine the length of the sides DE and EF.

three. A tree casts a shadow 45 feet long. At the same time, the shadow cast by a vertical 3 ft stick is 5 ft long. Observe the height of the tree.

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Solving for Unknown Values Using the Backdrop of Similar Triangles
This video shows examples of determining unknown values using the backdrop of similar triangles.

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Indirect Measurement Using Similar Triangles
This video explains how to use the properties of similar triangles to make up one's mind the height of a tree.

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Similar Triangles
Students review the thought that the ratios of the lengths of corresponding sides of similar figures are equal. Students then use this idea to notice missing segment lengths in similar figures.

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Similar Triangles - Find the missing side.

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Proportions with similar figures - find the missing length.

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How to find a missing part of a triangle that is like to another triangle?

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How to detect a missing part of a triangle that is similar to another triangle?

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