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Posted by Anuradha Sharma 5 years ago (8723442)
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Posted by Abhineet Jha 5 years ago (10365406)
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Jaya Shankar 4 years, 11 months ago (8571599)
Posted by Riya Sharma💜🤞 5 years ago (10228172)
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Posted by First Name 5 years ago (10129186)
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Secret Superstar 5 years ago (9080473)
Aadya Singh 5 years ago (10036809)
agar achha nhi soch or bol skte.. To bura bhi mat bolo....
aur na hi hum 2020 me roye the.. na royenge 2021 me ?
Posted by Pavneet Kaur 5 years ago (10365149)
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Yogita Ingle 5 years ago (2577571)
A galaxy is a sprawling space system which is composed of stars, dust, interstellar gas, stellar remnants, and dark matter and all held together by gravity.
Posted by A A 5 years ago (10365226)
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Posted by S. A. Nivashini Niva 5 years ago (10365209)
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Kiran Kumari 5 years ago (10352018)
Posted by Krazy Girl 5 years ago (9156732)
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Posted by Gaurav Kumar 5 years ago (10316795)
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Yogita Ingle 5 years ago (2577571)
Non Euclidean Geometry:
All the attempts to prove Euclid’s fifth postulate using the first 4 postulates failed. But they led to the discovery of several other geometries, called non-Euclidean geometries. Now the geometry of the universe we live in has been shown to be a non-Euclidean geometry. In fact, it is called spherical geometry. In spherical geometry, lines are not straight. They are parts of great circles (i.e., circles obtained by the intersection of a sphere and planes passing through the centre of the sphere). As per fist postulate of Euclid, lines AN & BN should not meet, but in the image below, these lines meet at point N. It has been proved that Euclidean geometry is valid only for the figures in the plane. On the curved surfaces, it fails.
Posted by Harsh Grover 5 years ago (10032396)
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Posted by Amal Fathima 5 years ago (10364296)
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Purodha Praslay 5 years ago (7848595)
Yogita Ingle 5 years ago (2577571)
- In 1864, Newlands arranged the known 56 elements in the order of increasing atomic masses.
- He observed that the properties of every eighth element are similar to the properties of the first element.
- Based on this observation, he proposed the Law of Octaves for the classification of elements.
- Law of Octaves: When the elements are arranged in the increasing order of their atomic masses, the properties of every eighth element are similar to the first.
Posted by Shashi Singh 5 years ago (6870934)
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Posted by Laxmi Narayan 5 years ago (10353165)
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Yogita Ingle 5 years ago (2577571)
Ap=BP ....(length of tangents from external point to circle are equal)
∠A=∠B=90o .... (Tangent is ⊥ to radius)
OP=OP .... (common side)
∴△AOP≅△BOP ....(RHS test of congruence)
∠APO=∠BPO=30o→c.a.c.t
∠AOP=∠BOP=60o→c.a.c.t
△AOP is 30o−60o−90o triangle.
∴△AOP,
cos60=OPOA
OP= a/ 1/2=2a
Posted by Neel Kamothi 4 years, 11 months ago (10315933)
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Sia ? 4 years, 6 months ago (6945213)
A number is divisible by 7 if it has a remainder of zero when divided by 7. Examples of numbers which are divisible by 7 are 28, 42, 56, 63, and 98. Divisibility by 7 can be checked by using long division, although this process can be quite time-consuming.
Posted by Sameer Nikhade 5 years ago (10304313)
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Yogita Ingle 5 years ago (2577571)
a. Elections are the most important tool of indirect democracy through which people elect their representatives who in turn make laws for them.
b. It is through elections people exercise their choice.
c. It allows for a government based on the consent of the people.
d. Elections allow peaceful transition from one form of government to another by means of elections. If people are not satisfied with present government, its policies its way of functioning they can always elect another party to form government.
Posted by Sameer Nikhade 5 years ago (10304313)
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Yogita Ingle 5 years ago (2577571)
a. Elections are the most important tool of indirect democracy through which people elect their representatives who in turn make laws for them.
b. It is through elections people exercise their choice.
c. It allows for a government based on the consent of the people.
d. Elections allow peaceful transition from one form of government to another by means of elections. If people are not satisfied with present government, its policies its way of functioning they can always elect another party to form government.
Posted by A A 5 years ago (9782660)
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Posted by Sumaila Ali Choudhary??? 5 years ago (8597425)
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Sumaila Ali Choudhary??? 5 years ago (8597425)
Posted by Airan Mishra 5 years ago (9995289)
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Reema Janu 4 years, 11 months ago (10208162)
Aashutosh Kumar 5 years ago (9641747)
Purodha Praslay 5 years ago (7848595)
Yogita Ingle 5 years ago (2577571)
Double Displacement Reaction:Reactions in which ions are exchanged between two reactants forming new compounds are called double displacement reactions.
<i>AB + CD → AC + BD</i>
Example: When solution of barium chloride reacts with the solution of sodium sulphate, white precipitate of barium sulphate is formed along with sodium chloride.
<i>BaCl2 + Na2SO4 → BaSO4 + 2NaCl</i>
Posted by Anchal Patel Anchal 5 years ago (10239833)
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Posted by Anchal Patel Anchal 5 years ago (10239833)
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Posted by Rudra Chetariya 5 years ago (9575707)
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Yogita Ingle 5 years ago (2577571)
a) A tringale may have 4 sides .
False
b) the interior of a tringale includes it a vertices .
False.
Explanation: The interior of a triangle is the region enclosed by the triangle and the vertices are not enclosed by the triangle.
c) An equilateral tringale is is isosceles also.
True.
Explanation: In an equilateral triangle, any two sides are equal.
d) each accute tringale sum property of a tringale .
False.
Explanation: Each acute triangle is not an equilateral triangle, but each equilateral triangle is an acute triangle.
Posted by Rudra Chetariya 5 years ago (9575707)
- 1 answers
Posted by Rudra Chetariya 5 years ago (9575707)
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Yogita Ingle 5 years ago (2577571)
Equilateral triangle: An equilateral triangle is a triangle whose all three sides are equal.
<a href="https://www.math-only-math.com/images/Equilateral-triangle.png" rel="gallery[pageGallery]" title="Equilateral Triangle">
</a>
Here, XYZ is an equilateral triangle as XY = YZ = ZX.
Isosceles triangle: An isosceles triangle is a triangle whose any two sides are equal.
<a href="https://www.math-only-math.com/images/Isosceles-triangle.png" rel="gallery[pageGallery]" title="Isosceles Triangle">
</a>
The adjoining figure shows an isosceles triangle where XY = XZ.
Scalene triangle: In a scalene triangle, all the three sides are unequal.
<a href="https://www.math-only-math.com/images/Scalene-triangle.png" rel="gallery[pageGallery]" title="Scalene Triangle">
</a>
The above figure shows a scalene triangle where XY ≠ YZ ≠ ZX.
Acute-angled triangle: If all the three angles of a triangle are acute angles (i.e., each measures less than 90°), it is called an acute-angled triangle.
<a href="https://www.math-only-math.com/images/Acute-angled-triangle.png" rel="gallery[pageGallery]" title="Acute-angled Triangle">
</a>
Here, ∠XYZ, ∠YZX and ∠ZXY are all acute angles.
Right-angled triangle: If one of the angles of a triangle is a right angle (i.e., measures 90°), it is called a right-angled triangle.
<a href="https://www.math-only-math.com/images/Right-angled-triangle.png" rel="gallery[pageGallery]" title="Right-angled Triangle">
</a>
Here, <XYZ = 90°.
Therefore, ∆ XYZ is a right-angled triangle.
Obtuse-angled triangle: If any of the three angles of a triangle is an obtuse angles (i.e., measures more than 90°), it is called an obtuse-angled triangle.
<a href="https://www.math-only-math.com/images/Obtuse-angled-triangle.png" rel="gallery[pageGallery]" title="Obtuse-angled Triangle">
</a>
Here, ∠XYZ > 90°.
Therefore, ∆ XYZ is an obtuse-angled triangle.
Posted by Rudra Chetariya 5 years ago (9575707)
- 1 answers
Yogita Ingle 5 years ago (2577571)
the sum of the lengths of the sides of a triangles is called its
Perimeter
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Deepesh Babu 4 years, 11 months ago (10373160)
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