EASY
10th CBSE
IMPORTANT
Earn 100

Converse of Pythagoras Theorem. If in a triangle, square of the longest side is equal to the sum of the squares of the other two sides, then the angle opposite to the longest side is equal to degrees.

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Important Questions on Triangles

MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 1
In the figure, if DE∥BC, then the approximate value of x is
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MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 2
In the figure below, PQ∥BC and AP:PB=1:2. Find ar(∆APQ)ar∆ABC.
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MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 3

In the figure below, ∆ABC~∆PQR, then y+z is

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MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 4
If ∆PQR~∆XYZ, ∠Q=50° and ∠R=70°, then ∠X is equal to
EASY
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 5
If in ∆ABC and ∆DEF, ABDE=BCFD, then they will be similar if
MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 6
In an isosceles ∆ABC, if AC=BC and AB2=2AC2, then ∠C is equal to
MEDIUM
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 7
If ∆ABC~∆DEF, ∠A=47°,∠E=83°, the value of ∠C is
EASY
10th CBSE
IMPORTANT
DINESH LAB MANUAL IN MATHEMATICS CLASS X>Chapter 6 - Triangles>MCQs (MULTIPLE CHOICE QUESTIONS)>Q 8
Corresponding sides of two similar triangles are in the ratio 4:9. Areas of these triangles are in the ratio