Question
Easy
If the angles, in degrees, of a triangle are x, 3x + 20 and 6x, the triangle must be
1
Obtuse
2
Acute
3
Right
4
Isosceles
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: 2D Geometry
Topic: Triangles
Correct Answer
Option A
Explanation
To determine why the triangle is obtuse, we need to analyze the given angles: \(x\), \(3x + 20\), and \(6x\). The sum of the angles in a triangle is always 180 degrees. Therefore, we can set up the equation: \[ x + (3x + 20) + 6x = 180 \] Simplifying this equation: \[ x + 3x + 20 + 6x = 180 \] \[ 10x + 20 = 180тАжRead More
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