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Chapter 12 of 15
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Constructions and Tilings

CBSE · Class 7 · Mathematics

Flashcards for Constructions and Tilings — CBSE Class 7 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

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Card 1Perpendicular bisector

What is bisection?

Answer

Bisection means dividing a line or any geometric object into two identical parts. A line that bisects a given line and is perpendicular to it is called the perpendicular bisector.

Card 2लंब समद्विभाजक

द्विभाजन क्या है?

Answer

द्विभाजन (Bisection) का अर्थ है किसी रेखा या किसी ज्यामितीय वस्तु को दो समान भागों में विभाजित करना। किसी दी गई रेखा को समद्विभाजित करने वाली और उस रेखा पर लम्बवत रेखा को लम्बद्विभाजक (Perpendicular B

Card 3नेत्र निर्माण

आँख के आकार के ऊपरी और निचले चापों की त्रिज्या समान क्यों होनी चाहिए?

Answer

आँख के सममित होने के लिए, ऊपरी और निचले चापों की त्रिज्या समान होनी चाहिए। यह समरूपता की स्थिति AX = AY = BX = BY देता है, इसलिए दोनों चाप सहायक रेखा के दोनों ओर संतुलित दिखते हैं।

Card 4Eye construction

Why do the upper and lower arcs of an eye shape need equal radius?

Answer

For the eye to be symmetrical, the upper and lower arcs must have the same radius. This gives the symmetry condition AX = AY = BX = BY, so the two arcs look balanced on both sides of the supporting li

Card 5Perpendicular bisector construction

How is the perpendicular bisector of a line segment constructed with ruler and compass?

Answer

1. Take a fixed radius. 2. From X and then Y, draw arcs above the line so they meet at A. 3. Using the same radius, draw arcs below the line so they meet at B. 4. Join A and B. AB is the perpendicular

Card 6लंब समद्विभाजक रचना

एक रेखाखंड का लंब समद्विभाजक रूलर और कंपास से कैसे बनाया जाता है?

Answer

1. एक निश्चित त्रिज्या लें। 2. X से और फिर Y से, रेखा के ऊपर चाप बनाएं ताकि वे A पर मिलें। 3. उसी त्रिज्या का उपयोग करके, रेखा के नीचे चाप बनाएं ताकि वे B पर मिलें। 4. A और B को जोड़ें। AB, XY का लंब

Card 7लंब समद्विभाजक प्रमाण

जब A और B, X और Y से समान दूरी पर हों तो AB, XY का लंब समद्विभाजक क्यों होता है?

Answer

कोई भी बिंदु जो X और Y से समान दूरी पर है, XY के लम्ब समद्विभाजक पर स्थित है। चूँकि A और B दोनों X और Y से समान दूरी पर हैं, इसलिए उन्हें जोड़ने वाली रेखा लम्ब समद्विभाजक होनी चाहिए।

Card 8Perpendicular bisector proof

Why is AB the perpendicular bisector of XY when A and B are equally distant from X and Y?

Answer

Any point that has the same distance from X and Y lies on the perpendicular bisector of XY. Since both A and B are equidistant from X and Y, the line joining them must be the perpendicular bisector.

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Frequently Asked Questions

What are the important topics in Constructions and Tilings for CBSE Class 7 Mathematics?
Constructions and Tilings covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Constructions and Tilings — CBSE Class 7 Mathematics?
Understand the core concepts first, then work through the 54 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
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There are 60 flashcards for Constructions and Tilings covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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