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MATHEMATICS [1 Mark Question Answer]

Inequalities in Triangles · ICSE STD 9 (ICSE - English Medium). 3 questions.

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[1 Mark Question Answer]

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Question 11 Mark
Name the smallest angle in each of these triangles: In $\triangle XYZ, XY = 6.2\ cm, XY = 6.8\ cm$ and $YZ = 5\ cm$
Answer
It is known that$, $in a triangle$, $the angle opposite to the smallest side is the smallest.
In $ \triangle XYZ, YZ = 5\ cm $ is the smallest side.
$\therefore \angle X$ is the smallest angle.
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Question 21 Mark
Name the smallest angle in each of these triangles:In $ \triangle PQR, PQ = 8.3\ cm, QR = 5.4\ cm $ and $PR = 7.2\ cm$
Answer
It is known that, in a triangle, the angle opposite to the smallest side is the smallest. In$ \triangle PQR, QR = 5.4\ cm$ is the smallest side.
$\therefore \angle P$ is the smallest angle.
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Question 31 Mark
Name the smallest angle in each of these triangles : In $\triangle ABC, AB = 6.2\ cm, BC = 5.6\ cm $ and$ AC = 4.2\ cm$
Answer
It is known that, in a triangle, the angle opposite to the smallest side is the smallest.
In $ \triangle ABC, AC = 4.2\ cm$ is the smallest side.
$\therefore \angle B $ is the smallest angle.
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[1 Mark Question Answer] - MATHEMATICS STD 9 Questions - Vidyadip