Volume is an important topic in Mathematics. In this we find the volume of different solid shapes - Cuboid, Cube, Sphere and others relatively according to the question.
https://youtu.be/nqpPuCy9cdM
Also watch YT video on Surface Area
Circle Important Properties Class 9 Geometry
Circle is Collection of all points in a plane which are equidistant from a fixed point on the plane.
There is one and only one circle passing through 3 given non-collinear points.
Equal chords of a circle subtend equal angles at the centre.
If the angle subtended by the chords at the centre...
Quadrilateral Questions Class 9 Geometry
The video contains Questions related to Quadrilateral which in include rectangle, rhombus, parallelogram. Watch and SubscribE the channel for more.
https://youtu.be/AwaeS2FLiDg
Circle Properties - Class 9 Geometry
These are Some of the important properties of a circle which are very important to keep in mind for solving questions related to geometry in mathematics.
Definition - Circle is Collection of all points in a plane which are equidistant from a fixed point on the plane.
There is one and only one circle...
Question 10: In figure, BE ⊥ AC, AD is any line from A to BC intersecting BE in H. P, Q and R are respectively the mid-points of AH, AB and BC. Prove that ∠PQR = 900.
Solution:
BE⊥AC and P, Q and R are respectively mid-point of AH, AB and BC. (Given)
In ΔABC, Q and R are mid-points of AB...
Question 1: Two opposite angles of a parallelogram are (3x – 2)0 and (50 – x) 0. Find the measure of each angle of the parallelogram.
Solution:
Given: Two opposite angles of a parallelogram are (3x – 2)0 and (50 – x) 0.
We know, opposite angles of a parallelogram are equal.
(3x – 2)0 = (50 – x) 0
3x + x = 50 + 2
4x = 52
x = 13
Value...
Pythagoras Theorem with proof
Watch explanation on YT
Triangles - Similarity and Congruency
Borrowed Features of Indian Constitution :
From Govt. of India Act 1935:
Federal Scheme
Office of the Governor
Judiciary
Public Service Commission
Emergency Provision
Administrative Details
From British Constitution :
Parliamentary Govt.
Rule of Law
Legislative Procedure
Single Citizenship
Cabinet System
Prerogative Writs
Parliamentary Privileges
Bicameralism
USA Constitution
Fundamental Rights
Independence of Judiciary
Judicial Review
Impeachment of President
Removal of Supreme...
The video Shows concept of Similarity and Congruency of Triangles.
also read : Types of triangles.
https://youtu.be/AGokZJuRYTQ
Similarity of Triangles :
1. Shape of the triangles are same but not the sizes.
2. Corresponding Sides are proportionate.
3. All 3 corresponding angles are same.
4. Proven by AAA.
5. Similar triangles not necessarily overlap.
6. Area and perimeter of similar triangles needs not to be equal.
Congruency Of triangles ;
1. Shape and sizes of triangles are same.
2. Corresponding Sides are equal.
3. All 3...
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