NCERT - 8 - Maths :: Understanding Quadrilaterals

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Go To: NCERT-Mathematics-Grade 8

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[Author - Kripa S]


Objective: Introduce Polygons, explain Quadrilaterals, types and properties

Subtopics to be covered:

- Identify polygons and classify based on number of sides

- Classify polygons (convex, concave, regular, irregular)

- Sum of angles of a polygon

- Types of Quadrilaterals and their properties (Trapezium, Kite, Parallelogram, Rhombus, Rectangle, Square)

Learning Outcome:

- Students can classify polygons and quadrilaterals

- Students can define types of quadrilaterals


[Author - Kripa S]


1. Make teams of 6 students. One team will explain what is interior and exterior of a closed curve (all students stand in a circle seeing inside for interior and outside for exterior). Another team will explain what is convex and concave polygon (they'll stand to make a polygon of that shape). One group will show the difference between regular and irregular polygon (the students will stand at equidistant positions, or near and far away).

2. Make two teams. One team will draw a polygon on board and other will guess what it is. Play for 10-15 times and add the score to find the winning team


[Author - Fathima Nazar]

Term Transliterated Term Translated Term
quadrilateral क़्वाड्रिलेटरल चतुष्कोष
plane प्लेन
surface सर्फेस सतह
curve कर्व वक्र
polygon पॉलीगोन बहुभुज
diagonal डायगोनल विकर्ण
convex कॉन्वेक्स उत्तल
concave कॉनकेव नतोदर
regular रेगुलर नियमित
irregular इर्रेगुलर अनियमित
trapezium ट्रपीज़ियम समलंब
kite काइट पतंग
parallelogram पाराल्लेलोग्राम चतुर्भुज
rectangle रेक्टैंगल आयत
rhombus रोम्बस विषमकोण
square स्क्वायर चौकोर
bisect बाइसेक्ट द्विविभाजित करना
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Anonymous user #1

84 months ago
Score 0++
Rhombus is also called sam chaturbhuj.
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