Skip to main content

Basic Geometry * * Triangle, Quadrilateral, Rectangle, Square and Circle are some of the common plane figures. P

* Basic Geometry *

Point: A point has no length, breadth or thickness.

Line: A line has no fixed length and no breadth or thickness.

Line Segment: A straight line with two end points is called a line segment.

Ray: A line segment extended endlessly in one direction is called a ray.

Defferent Types of Lines

Horizontal line:
Vertical lines:
Slanting lines:
Parallel lines:
Wavy lines:
Curved lines:
Intersecting lines:

Plane figures:
Triangle, Quadrilateral, Rectangle, Square and Circle are some of the common plane figures. Plane figures has two things- 
sides and vertices.

Vertex: the meeting point of two line segments is called vertex.

Triangle: A simple closed plane figure with is surrounded by three line segments is called a triangle.

Quadrilateral: a figure bounded by four line segments is called a quadrilateral.
( A quadrilateral has 4 side, 4 vertices, 4 angles.)

Rectangle: A quadrilateral in which opposite sides are equal to each other and each angle is equal to to 90 degree is called a rectangle.
( All angles of a rectangle are also equal.)

Square: A rectangle having all side of the same length is called a square.
( All angles of a square are equal to each other.)

Circle: A circle is a closed plane figure. it has no vertex. It is formed by curved line. The mid point inside a circle is called the centre of the circle. 
( It has no side and no vertices.)

Solid figures:
An object that occupies space is called a solid.
The outside of a solid is called its surface.

Cube: In a cube all sides are equal in length.
A cube has: 
12 sides (edges), 
6 faces, 
8 vertices.

Cuboid: In a cuboid opposite sides are equal in length.
A cuboid has:
12 sides,
6 faces and opposite surface are equal in shapes and sizes.
8 vertices.

Cylinder: A cylinder has two plane surfaces and one curved face.
It has two edges but no vertex.
Con: A con has one plane face and one curved face.
It has one vertex.

Sphere: A sphere has only one curved face.
It does not have any side or vertex.
-----------------------*-------------------------

Popular posts from this blog

2 October * ये बातें सिखाती हैं

गांधी जी - शास्त्री जी की ये बातें सिखाती हैं जीवन जीने की कला । 2 अक्टूबर को देश की दो महानविभूतियों महात्मा गांधी (2 अक्टूबर 1869 ) और लालबहादुर शास्त्री ( 2 अक्टूबर 1904) ने जन्म लिया था। इन दोनों स्वतंत्रता सेनानियों ने देश को ब्रिटिश हुकूमत से आजाद कराने में अतिमहत्वपूर्ण भूमिका निभाई।  बापू ने हमें 'सत्य और अहिंसा' के मार्ग पर चलना सिखाया, तो शास्त्री जी ने 'जय जवान-जय किसान' का नारा दिया। जो जीवन जीने की कला सिखाते हैं। आइये आपको गांधी जी और शास्त्री जी के कुछ ऐसे ही विचारों से रूबरू कराते हैं। * ऐसे जिएं जैसे कि आपको कल मरना है और सीखें ऐसे, जैसे आपको हमेशा जीवित रहना है। * डर शरीर की बीमारी नहीं है, यह आत्मा को मारता है।  * विश्वास करना एक गुण है, अविश्वास दुर्बलता की जननी।  * जो समय बचाते हैं वे धन बचाते हैं और बचाया धन, कमाए हुए धन के समान महत्वपूर्ण है।  * आंख के बदले आंख पूरे विश्व को अंधा बना देगी। * आजादी का कोई मतलब नहीं यदि इसमें गलती करने की आजादी शामिल न हो। * प्रसन्नता ही एकमात्र ऐसा इत्र है, जिसे आप दूसरों पर छिड़ते हैं तो कुछ बूंदे...
Read more

List of Union Territories and all states of India in 2022.

State                                      Capital 01. Andhra Pradesh.        Hyderabad 02. Arunachal Pradesh.   Itanagar 03. Assam.                        Dispur 04. Bihar.                            Patna 05. Chhattisgarh.              Raipur 06. Goa.                              Panaji 07. Gujarat.                        Gandhinagar 08. Haryana.                      Chandigarh 09. Himachal Pradesh.     Shimla 10. Jharkhand.                   Ranchi ...
Read more

Class 2nd Science. * Chapter 1. Plant's Life:। * Trees. (वृक्ष)Very big and tall plants are called trees.

Class 2nd Science. Chapter 1. Plant's Life: * Trees. (वृक्ष) Very big and strong plants are called trees.  ----------------*-------------- * Shrubs. (झाड़ियॉ) The dense plants which are short and hard stems are called shrubs. ----------------*-------------- * Herbs. (शाक ) Very small and seasonal plants are called herbs. ----------------*-------------- * Climbers. (पर्वतारोही) Some plants are weak and can not stand on their own. They need support to climb up. These plants are called climbers. .................................. Some plants are weak, that cannot stand on their own, which need support to climb up, they are called climbers. ----------------*-------------- What is plant life? The plant life cycle consists of four stages; seed, sprout, small plant, and adult plant. ----------------*-------------- ** Life of Plants ** A. Tick(✓) the correct answer: 1. The small plants are called (a) shrubs [✓] (b) herbs (c) twiners 2. Some -------- are big and strong. (a) plants [✓] ...
Read more