Sum of Sides and Angles in a TrianglePractice Questions & MCQs
Practice Sum of Sides and Angles in a Triangle questions from Triangles (Class 9 Maths) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Sum of Sides and Angles in a TriangleQuiz - Solve & Score
Q1. A carpenter nails together a triangular roof truss whose two lower joints open to 70 degrees and 55 degrees; what does the remaining joint measure?
- A.110 degrees
- B.235 degrees
- C.125 degrees
- D.55 degrees
Answer: D. 55 degrees
The interior angles of a triangle add to 180 degrees, so the third = 180 - (70 + 55) = 180 - 125 = 55 degrees.
Q2. A sailmaker stitches a triangular jib and finds its two lower corners come to 48 degrees and 67 degrees; how wide is the top corner of the sail?
- A.115 degrees
- B.132 degrees
- C.113 degrees
- D.65 degrees
Answer: D. 65 degrees
The interior angles of a triangle add to 180 degrees, so the third = 180 - (48 + 67) = 180 - 115 = 65 degrees.
Q3. A gardener pegs out a triangular herb bed and reads two of its corners as 34 degrees and 81 degrees on a protractor; what is the third corner?
- A.146 degrees
- B.65 degrees
- C.99 degrees
- D.115 degrees
Answer: B. 65 degrees
The interior angles of a triangle add to 180 degrees, so the third = 180 - (34 + 81) = 180 - 115 = 65 degrees.
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Get early accessSum of Sides and Angles in a Triangle - Frequently asked questions
Where can I practise Sum of Sides and Angles in a Triangle questions for Class 9 Maths?
RankByte has Sum of Sides and Angles in a Triangle practice questions and MCQs from Triangles (Class 9 Maths), each with the correct answer and a step-by-step solution - free to start.
Are these Sum of Sides and Angles in a Triangle questions important for the exam?
Yes. These Sum of Sides and Angles in a Triangle important questions follow the Maths exam pattern (CBSE Boards, plus JEE and NEET foundation), so they help with both school and competitive prep.
Do the Sum of Sides and Angles in a Triangle questions come with answers and solutions?
Every Sum of Sides and Angles in a Triangle question on RankByte comes with the correct answer and a full step-by-step solution, so you learn the concept instead of just guessing.