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Geometry: Fundamental Concept

ICSE · Class 6 · Mathematics

Flashcards for Geometry: Fundamental Concept — ICSE Class 6 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

131 questions30 flashcards4 concepts

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30 Flashcards
Card 1Complementary Angles

What is the measure of the complement of a 35° angle?

Answer

Step 1: Complementary angles add up to 90°. Step 2: Subtract the given angle from 90°. 90° – 35° = 55°. Answer: 55°…

Card 2Vertically Opposite Angles

If two lines intersect and one angle is 40°, what is the measure of its vertically opposite angle?

Answer

Vertically opposite angles are always equal. So, if one angle is 40°, its vertically opposite angle is also 40°. Answer: 40°…

Card 3Complementary Angles

Two complementary angles are in the ratio 2:3. Find the angles.

Answer

Step 1: Let the angles be 2x and 3x. Step 2: Since they are complementary, 2x + 3x = 90° → 5x = 90° → x = 18°. Step 3: 2x = 36°, 3x = 54°. Answer: 36° and 54°…

Card 4Supplementary Angles

An angle measures 110°. What is its supplement?

Answer

Step 1: Supplementary angles add up to 180°. Step 2: Subtract the given angle from 180°. 180° – 110° = 70°. Answer: 70°…

Card 5Supplementary Angles

Two supplementary angles are in the ratio 4:5. Find the angles.

Answer

Step 1: Let the angles be 4x and 5x. Step 2: Since they are supplementary, 4x + 5x = 180° → 9x = 180° → x = 20°. Step 3: 4x = 80°, 5x = 100°. Answer: 80° and 100°…

Card 6Angles on a Straight Line

In the figure, AOB is a straight line. If ∠AOC = 60° and ∠COB = x, find x.

Answer

Step 1: AOB is a straight line → ∠AOB = 180°. Step 2: ∠AOC + ∠COB = 180° → 60° + x = 180°. Step 3: x = 180° – 60° = 120°. Answer: 120°…

Card 7Linear Pair of Angles

If two adjacent angles form a linear pair and one is 75°, what is the other?

Answer

Step 1: Linear pair means the sum is 180°. Step 2: 180° – 75° = 105°. Answer: 105°…

Card 8Complementary Angles

An angle is equal to its complement. What is its measure?

Answer

Step 1: Let the angle be x. Then, x + x = 90° → 2x = 90° → x = 45°. Answer: 45°…

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Frequently Asked Questions

What are the important topics in Geometry: Fundamental Concept for ICSE Class 6 Mathematics?
Geometry: Fundamental Concept covers several key topics that are frequently asked in ICSE Class 6 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Geometry: Fundamental Concept — ICSE Class 6 Mathematics?
Understand the core concepts first, then work through the 131 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Geometry: Fundamental Concept?
There are 30 flashcards for Geometry: Fundamental Concept covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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