 ## Class 10 Maths Triangles Handwritten Notes by Toppers – Download PDF

Are you a Class 10 student looking for comprehensive Class 10 Maths Triangles Handwritten Notes by Toppers for your mathematics exam preparation? Look no further! In this article, we have compiled a set of high-quality handwritten notes on triangles, prepared by top-performing students. These notes are available for download in PDF format, providing you with a valuable resource to enhance your understanding of this crucial topic in mathematics.

Class 10 Maths Triangles – Get here the Handwritten Notes for Class 10 Triangles. Candidates who are ambitious to qualify the Class 10 with a good score can check this article for Notes. Below we provided the link to access the Notes of Class 10 Maths for the topic Triangles. You can practice the questions and check your answers from the solutions given after the question. By practicing these resources candidates definitely get the idea of which his/her weak areas and how to prepare well for the examination.

• Class: 10th
• Subject: Math
• Topic: Triangles
• Resource: Handwritten Notes

Maths Handwritten Notes is based on the new(reduced) syllabus by CBSE.

# CBSE Class 10 Maths Triangles Handwritten Notes

Particularly when it comes to the subject of Mathematics, students desire to have an answer key to help them in evaluating their learning and development. Refer to these solutions when practicing and solving the Mathematics exercises from NCERT Textbooks.

## Introduction to Triangles

Triangles are fundamental geometric shapes that consist of three sides and three angles. They are widely studied in mathematics due to their simplicity and numerous applications in various fields. Understanding the properties, classifications, and concepts related to triangles is essential for a strong foundation in geometry.

## Types of Triangles

### Scalene Triangle

A scalene triangle is a triangle in which all three sides have different lengths. Each angle in a scalene triangle is also different from the other two angles.

### Isosceles Triangle

An isosceles triangle is a triangle in which two sides have equal lengths. The angles opposite the equal sides are also equal.

### Equilateral Triangle

An equilateral triangle is a triangle in which all three sides have equal lengths. Each angle in an equilateral triangle measures 60 degrees.

## Properties of Triangles

### Angle Sum Property

The sum of the three angles in any triangle is always 180 degrees. This property forms the basis for solving various problems related to angles in triangles.

### Exterior Angle Property

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two interior angles that are opposite to it.

### Pythagorean Theorem

The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

## Congruence of Triangles

Congruent triangles are triangles that have the same shape and size. There are various criteria for proving the congruence of triangles.

### SSS Congruence

If the three sides of one triangle are equal to the three sides of another triangle, then the triangles are congruent.

### SAS Congruence

If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the triangles are congruent.

### ASA Congruence

If two angles and the included side of one triangle are equal to two angles and the included side of another triangle, then the triangles are congruent.

## Similarity of Triangles

Similar triangles are triangles that have the same shape but not necessarily the same size. The corresponding angles of similar triangles are equal, and the corresponding sides are in proportion.

### AAA Similarity

If the three angles of one triangle are equal to the three angles of another triangle, then the triangles are similar.

### SSS Similarity

If the ratios of the lengths of the corresponding sides of two triangles are equal, then the triangles are similar.

### SAS Similarity

If the ratio of the lengths of two sides of one triangle is equal to the ratio of the lengths of the corresponding sides of another triangle, and the included angles are equal, then the triangles are similar.

## Trigonometric Ratios in Triangles

Trigonometric ratios are ratios of the lengths of two sides of a right-angled triangle. They are widely used in solving various mathematical and real-life problems involving angles and distances.

### Sine Ratio

The sine ratio of an angle in a right-angled triangle is defined as the ratio of the length of the side opposite the angle to the length of the hypotenuse.

### Cosine Ratio

The cosine ratio of an angle in a right-angled triangle is defined as the ratio of the length of the side adjacent to the angle to the length of the hypotenuse.

### Tangent Ratio

The tangent ratio of an angle in a right-angled triangle is defined as the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle.

## Pythagorean Triplets

Pythagorean triplets are sets of three positive integers that satisfy the Pythagorean theorem. In other words, these triplets represent the side lengths of right-angled triangles.

## Medians and Altitudes of Triangles

Medians and altitudes are important lines or segments associated with triangles. The medians connect the midpoint of each side to the opposite vertex, while the altitudes are perpendicular lines drawn from each vertex to the opposite side.

## Circumcircle and Incircle of Triangles

The circumcircle of a triangle is a circle that passes through all three vertices of the triangle. The incircle of a triangle is a circle that is tangent to all three sides of the triangle.

## Applications of Triangles in Real Life

Triangles have various applications in real-life scenarios, such as architecture, engineering, navigation, and computer graphics. They are used to calculate distances, determine angles, and create stable structures.

## Tips for Solving Triangle Problems

To effectively solve problems related to triangles, consider the following tips:

1. Understand the given information and visualize the triangle.
2. Apply relevant geometric properties and theorems.
3. Break down complex problems into smaller, manageable steps.
4. Use appropriate trigonometric ratios and formulas when applicable.
5. Practice solving a variety of triangle problems to enhance your skills.

## Conclusion

In conclusion, understanding triangles is crucial for success in mathematics, especially in Class 10. Handwritten notes by toppers provide a valuable resource for studying and mastering this topic. By downloading the PDF notes, you gain access to comprehensive explanations, examples, and practice questions that will aid in your exam preparation.