Special Type of Quadrilaterals
ICSE · Class 8 · Mathematics
Flashcards for Special Type of Quadrilaterals — ICSE Class 8 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
Interactive on Super Tutor
Studying Special Type of Quadrilaterals? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
1,000+ Class 8 students started this chapter today
Solve: How many degrees is the sum of the interior angles of a quadrilateral?
Answer
Step 1: Use the formula for a quadrilateral. ∠A + ∠B + ∠C + ∠D = 360° Step 2: Add the angles. So, the sum of the interior angles is 360°. Answer: 360°…
Apply the quadrilateral angle-sum formula to find the missing angle: ∠A = 80°, ∠B = 95°, ∠C = 110°. Find ∠D.
Answer
Step 1: Use ∠A + ∠B + ∠C + ∠D = 360°. Step 2: Substitute the known angles. 80° + 95° + 110° + ∠D = 360° Step 3: Add the known angles. 285° + ∠D = 360° Step 4: Subtract 285° from both sides. ∠D = 360° …
Why do consecutive angles of a parallelogram add up to 180°?
Answer
In a parallelogram, opposite angles are equal. So if ∠A = ∠C and ∠B = ∠D, then: ∠A + ∠B + ∠C + ∠D = 360° ∠A + ∠B + ∠A + ∠B = 360° 2∠A + 2∠B = 360° ∠A + ∠B = 180° So consecutive angles are supplementar…
Solve: In a parallelogram, ∠A = 3 times ∠B. Find all the angles.
Answer
Step 1: Let ∠B = x. Then ∠A = 3x. Step 2: Consecutive angles of a parallelogram add to 180°. 3x + x = 180° Step 3: Solve. 4x = 180° x = 45° Step 4: Find the angles. ∠B = 45° ∠A = 135° Step 5: Opposite…
When do you use the fact that the diagonals of a parallelogram bisect each other?
Answer
Use it when the diagonals intersect at a point O and the halves are needed. If AC and BD are diagonals of parallelogram ABCD, then: OA = OC and OB = OD Example: If OB = 6 cm, then BD = 12 cm. If OA = …
Solve: In a parallelogram, OB = 6 cm. Find BD.
Answer
Step 1: Use the fact that diagonals of a parallelogram bisect each other. Step 2: OB is half of BD. OB = 1/2 BD Step 3: Substitute OB = 6 cm. 6 cm = 1/2 BD Step 4: Multiply by 2. BD = 12 cm Answer: 12…
Solve: In a parallelogram, the diagonals intersect at O. If OA = 2x + 6 and OD = 3x + 3, find x.
Answer
Step 1: In a parallelogram, diagonals bisect each other. So OA = OC and OB = OD. Step 2: Use the given equal halves. OA = OD 2x + 6 = 3x + 3 Step 3: Solve. 6 = x + 3 x = 3 Answer: x = 3…
Solve: In a parallelogram, the adjacent sides are in the ratio 5:3 and the perimeter is 96 cm. Find the sides.
Answer
Step 1: Let the sides be 5x cm and 3x cm. Step 2: Use perimeter of a parallelogram. Perimeter = 2(5x + 3x) Step 3: Substitute 96 cm. 2(5x + 3x) = 96 2(8x) = 96 16x = 96 Step 4: Find x. x = 6 Step 5: F…
+19 more flashcards available
Practice AllFrequently Asked Questions
What are the important topics in Special Type of Quadrilaterals for ICSE Class 8 Mathematics?
How to score full marks in Special Type of Quadrilaterals — ICSE Class 8 Mathematics?
How many flashcards are available for Special Type of Quadrilaterals?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Special Type of Quadrilaterals
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Special Type of Quadrilaterals chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 8 Mathematics.