Class 7 Maths- Ch 6 – Triangle and its properties

Angle Sum Property

The total measure of the three angles of a triangle is 180°.

Chapter 6 -The Triangle and its properties- NCERT Solutions Class 7 Maths

Given: -∠1,∠2,∠3 are angles of ∆ABC

∠4 is the exterior angle when BC is extended to D

Justification ∠1+∠2=∠4(by exterior angle property)

∠1+∠2+∠3=∠4+∠3 (adding ∠3 on both sides)

∠4 and ∠3 form a linear pair so it is 180°

Hence ∠1+∠2+∠3=180°

Watch and learn more about angle sum property – Class 7 Maths.

Two Special Triangles: Equilateral and Isosceles

Equilateral Triangle: – Triangles in which all the three sides are equal are called an equilateral triangle.

Two Important points:-

all sides have the same length
each angle has measure 60°

Isosceles triangle: – Triangles in which two sides are of equal lengths is called an isosceles triangle.

Two Important points:-

two sides have the same length
base angles opposite to the equal sides are equal

Read full article click here....Class 7 Maths- Ch 6 – Triangle and its properties

For courses click www.takshilalearning.com

Call us : 8800999280/8800999284

Comments

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne...

What are Noble Gases? Example and noble gases name

What are Noble Gases? Example and noble gases name Noble Gases Noble gases, sometimes known as inert gases or erosions, are part of the modern periodic table's 18th group. This group is made up of the following individuals: Helium is a kind of gas (He) Neon (Ne) Argon is a gas (Ar) Krypton (Kr) Xenon is a kind of xenon gas (Xe) Radon is a gas that can cause cancer (Rn) Noble gases exist in a gaseous state under typical temperature and pressure conditions. Because all noble gases have stable electronic structures, they have very little chemical reactivity. They are monoatomic gases that do not readily form molecules. 'ns2np6' represents the basic electrical configuration of noble gases. As a result, noble gases' outermost valence shells can be deemed 'complete.' The chemical inertness of the group of 18 elements is due to this. Because of the stability of certain elements, these gases form a group. These stable elements' crusts are totally filled. Regardles...

CS Executive

At Takshila Learning we provide you Video Lecture of best faculties in India. We assure you not only the best quality of videos but also best content. Our teachers way of teaching, presentation and explanation is very simple and unique. Why Takshila Learning? We can give you 10 top reasons why you should take CS Executive Online Video Coaching Classes Lectures from Takshila Learnings. We are providing online classes of CS Executive for last 5 years (almost oldest in the market ) We pick best teachers for every subjects. We don’t provide updates only with old videos. Infact we provide new updated classes for every attempt Our teachers update notes for every attempt. Videos and notes are highly exams oriented . Our teachers cover last 5 attempts question papers along with ICSI Course content. Our video classes includes live practical examples to help you understand easily. Our structure of our fee ...

Takshila Learning - Online Tutorials

Search This Blog