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Quantitative Aptitude
SSC CGL, SSC quantitative aptitude
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Geometry for SSC CGL | Concepts & Practice | SSC CGL Quantitative Aptitude
Build Geometry accuracy for SSC CGL with concept clarity, key relations, exam-speed methods and approved practice.
Tailored for SSC CGL Quantitative Aptitude. 103 active practice questions. 1 subject mock. Related topics: Probability, Quadratic Equations, Percentage.
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Concept summary
Key formulas
Basic tricks
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Detailed solutions
Weak-area analytics
Why students use this page
Learn the shortcut first, then solve with less confusion
This page is built to show the shortcut, the trap, and the faster solving route before you start clicking through questions.
Avoid common traps
See where students commonly lose marks so you can eliminate bad options earlier.
Solve faster in exam
Apply one practical method before attempting MCQs and cut down hesitation.
Quick Summary
Free
Geometry at a glance
Geometry revision for SSC CGL: understand the base rule, apply the correct formula or relation, check common traps, then practise with approved questions.
Concept
Core idea
Geometry questions rely on fixed properties of lines, angles, triangles, quadrilaterals and circles. A diagram helps, but the given relationships—not the visual appearance—must control the calculation.
SSC CGL focus: Solve the core method first, then use the approved practice questions on this page to build exam-speed accuracy.
Short Notes
Fast revision notes
Geometry revision rule: concept → formula/relation → one worked example → timed practice → error review.
Revision
Last-minute points
- Core concept
- Key formula/relation
- Common trap
- Approved practice
Formula Box
Free
Formula / key facts
- Triangle angle sum = 180°
- Quadrilateral angle sum = 360°
- Pythagoras: a²+b²=c² for a right triangle
- Circle circumference = 2πr
Shortcut Zone
Free
Tricks / shortcuts
Mark equal angles, parallel lines and right angles before calculating. Many SSC geometry questions collapse after one standard property is identified.
Memory Trick
Remember faster
Mark equal angles, parallel lines and right angles before calculating. Many SSC geometry questions collapse after one standard property is identified.
Next Step
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Solve topic-wise questions, measure accuracy, identify weak areas, and prepare for mock tests faster with a sharper revision flow.
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Exam Tips
How to score with this topic
- Read the exact requirement before choosing a shortcut.
- Keep units, signs and percentage bases consistent.
- Use the final few seconds to verify direction and magnitude.
Mistakes
Common traps to avoid
- Using a memorised shortcut without checking its condition.
- Skipping unit or base conversion.
- Doing long arithmetic before identifying the underlying relation.
Solved Example
Step-by-step example
Practice example: In a Geometry practice set, a student answers 18 questions correctly out of 24. What percentage is correct?
Solution: Correct percentage = 18/24 x 100 = 75%.
Practice Preview
Before you solve
- In a triangle, two angles are 35° and 65°. Find the third angle.
- In a triangle, two angles are 42° and 73°. Find the third angle.
- In a triangle, two angles are 28° and 92°. Find the third angle.
Learn the shortcut first
Shortcut before you solve
Geometry gets faster when you first fix the shape and the exact quantity being asked.
Featured shortcut
Identify the shape first, then apply the direct formula without mixing area and perimeter.
Exam-use rule
Use the formula that matches both the shape and the quantity asked.
Use this in 3 seconds
Underline whether the question asks for area, perimeter, volume, or surface area.
Faster solving steps
Use this 4-step method before solving to keep your thinking fast and repeatable.
Step 1
Identify relation
Spot the pattern, relationship, or core idea first.
Step 2
Apply same pattern
Use the same rule instead of re-solving from scratch.
Step 3
Eliminate wrong options
Remove confusing choices before comparing the last few.
Step 4
Confirm final answer
Pick the option that matches the shortcut most cleanly.
Practice Questions
Start with the first 10 questions free, then unlock the rest with premium
Now apply the trick on real questions
Use the shortcut above before solving these questions
Identify the shape first, then apply the direct formula without mixing area and perimeter.
Tip: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Real exam shortcut before you solve
Find the area of a rectangle with length 8 cm and breadth 5 cm.
Step 1
Area of rectangle = length x breadth.
Step 2
8 x 5 = 40 sq cm.
Rule
Use the formula that matches both the shape and the quantity asked.
3-second trick
Underline whether the question asks for area, perimeter, volume, or surface area.
Trap to avoid
Using the perimeter formula when the question asks for area.
Correct answer
40 sq cm
Worked example
Find the area of a rectangle with length 8 cm and breadth 5 cm.
Thinking path
- Shape is a rectangle.
- The question asks for area, not perimeter.
- So multiply length and breadth.
Final answer: 40 sq cm
Why this is fast: The right formula ends the question immediately.
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Q1
Medium
In a triangle, two angles are 39° and 66°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 75.
Q2
Medium
In a triangle, two angles are 54° and 58°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 68.
Q3
Medium
In a triangle, two angles are 32° and 71°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 77.
Q4
Medium
In a triangle, two angles are 46° and 79°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 55.
Q5
Medium
In a triangle, two angles are 37° and 88°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 55.
Q6
Medium
In a triangle, two angles are 51° and 64°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 65.
Q7
Medium
In a triangle, two angles are 28° and 92°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 60.
Q8
Medium
In a triangle, two angles are 42° and 73°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 65.
Q9
Medium
In a triangle, two angles are 35° and 65°. Find the third angle.
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Use the triangle angle-sum property: the three interior angles total 180°. Therefore, the required answer is 80.
Q10
Easy
In a Geometry practice set, a student answers 18 questions correctly out of 24. What percentage is correct?
Concept type: Area and perimeter formula use
Shortcut used: Identify the shape first, then apply the direct formula without mixing area and perimeter.
Quick hint: Rectangle area = l x b, perimeter = 2(l + b). Circle area uses pi r^2 and circumference uses 2 pi r.
Quick idea: Correct percentage = 18/24 x 100 = 75%.
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FAQ
Frequently asked questions
How should I revise Geometry for SSC CGL?
Revise the core relation, solve one worked example, then attempt a short timed practice set.
Are these official PYQs?
No. Practice questions are labelled from ExamPrepWay's approved original/practice bank unless a verified official source is explicitly shown.
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