Question
Easy
In triangle PQR, ∠P=55° and QR=18 cm. In which of the following cases, APQR can be an obtuse scalene triangle ?
1
∠R = 25° and PQ=18 cm
2
∠R=15° and PR > 18 cm
3
∠R = 65° and PQ > 18 cm
4
∠R=35° and PR=18 cm
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: 2D Geometry
Topic: Triangles
Correct Answer
Option B
Explanation
To determine why Option 2 is the correct choice for making triangle PQR an obtuse scalene triangle, let's analyze each option based on the properties of triangles. ### Explanation for Option 2: - Given: ∠P = 55°, ∠R = 15°, and PR > 18 cm. - Analysis: In a triangle, the sum of the angles must be 180°. Therefore, ∠Q = 180° - ∠P - ∠R = 180° - 55°…Read More
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