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Chapter 16 of 28
Practice Quiz

Area Theorems — Practice Quiz

ICSE · Class 9 · Mathematics

Try a 4-question quiz on Area Theorems for ICSE Class 9 Mathematics: tap an answer to check it and see why. 35 questions in the full chapter test.

35 questions25 flashcards3 formulas & key relations5 concepts

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An infographic showing the basic area formulas for a triangle, rectangle, and parallelogram, as a refresher before introducing area theorems.
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Quick Quiz: Area Theorems

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1

Two parallelograms ABCD and ABEF are on the same base AB and between the same parallels. If the area of parallelogram ABCD is 48 cm², what is the area of parallelogram ABEF?

2

A triangle ABC and parallelogram ABDE are on the same base AB and between the same parallels. If the area of parallelogram ABDE is 60 cm², find the area of triangle ABC.

3

Two triangles PQR and PQS are on the same base PQ and between the same parallels. If the area of triangle PQR is 25 cm², what is the area of triangle PQS?

4

In triangle ABC, D is the midpoint of BC. What is the ratio of areas of triangles ABD and ADC?

35 Questions·
multiple choicemultiple correcttext answertrue false

Sample Questions

1multiple choice

A parallelogram has area 72 cm². A triangle is drawn on the same base and between the same parallels as the parallelogram. Find the area of the triangle.

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36 cm²

Area of triangle = ½ × Area of parallelogram (when on same base and between same parallels). Area of triangle = ½ × 72 = 36 cm².

2multiple correct

Which of the following statements about area theorems are correct?

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Parallelograms on same base and between same parallels are equal in area, Triangle area is half of parallelogram area on same base, Triangles on same base and between same parallels are equal in area

The first, second, and fourth statements are fundamental area theorems. The third statement is false as triangle areas depend on base and height. The fifth statement is false as areas depend on dimensions, not shape type.

3multiple choice

In triangle PQR, S divides side QR in the ratio 3:2. If the area of triangle PQR is 50 cm², find the area of triangle PQS.

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30 cm²

QS:QR = 3:5 (since QS:SR = 3:2, so QS:QR = 3:(3+2) = 3:5). Area of triangle PQS/Area of triangle PQR = QS/QR = 3/5. Area of triangle PQS = (3/5) × 50 = 30 cm².

4multiple choice

Two parallelograms have equal bases of 8 cm each and are between the same parallels with height 6 cm. What can you conclude about their areas?

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Areas are equal

Parallelograms on equal bases and between same parallels are equal in area. Both have area = base × height = 8 × 6 = 48 cm².

+31 more questions on Area Theorems (ICSE Class 9 Mathematics)

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Frequently Asked Questions

What are the important topics in Area Theorems for ICSE Class 9 Mathematics?
Key topics in Area Theorems include Basic ideas and figures between the same parallels, Theorem 19 and its corollary, Theorem 20: area of a triangle and a parallelogram, Theorem 21 and corollaries. Study these first, then practise questions on each for Class 9 exams.
How many practice questions are there for Area Theorems?
There are 35 questions on Area Theorems. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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