Agniveer Army Triangles, Circles and Geometry — practice questions

Explore 2 free Triangles, Circles and Geometry questions in Agniveer Army Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Triangles, Circles and Geometry with Quill →

Triangles, Circles and Geometry questions and exercises with answers

Showing questions 1–2 of 2.

If the angles of a triangle are in the ratio 1 : 2 : 3, then what is the smallest angle?Read the answer and worked solution →The ratio of the interior to exterior angle of a regular polygon is 4:1. How many sides does the polygon have?Read the answer and worked solution →

Worked practice questions

If the angles of a triangle are in the ratio 1 : 2 : 3, then what is the smallest angle?

15°
25°
30°
40°

Show answer and solution

Correct answer: C. 30°

1. Let the angles be x, 2x and 3x. 2. Their sum is 180°: x + 2x + 3x = 6x = 180°. 3. So x = 30°. 4. The smallest angle is x = 30°. _Source: RRB Group D CEN-02/2018 PYQ, Q.15._

Open this question →

The ratio of the interior to exterior angle of a regular polygon is 4:1. How many sides does the polygon have?

Show answer and solution

Correct answer: D. 10

1. Interior + exterior = 180°, and ratio 4:1 means exterior = 180/5 = 36°. 2. Number of sides = 360° / exterior angle = 360 / 36. 3. = 10 sides. _Source: RRB Group D CEN-02/2018 PYQ, Q.24._

Open this question →

How to practise

Choose a Triangles, Circles and Geometry question and try to work out your answer.
Open the question to check the correct answer and read its worked solution.
Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Triangles, Circles and Geometry practice for Agniveer Army. Read explanations as you go. No signup form needed to start.

Practise Triangles, Circles and Geometry →