Sum of Sides and Angles in a Triangle MCQs
Practice Sum of Sides and Angles in a Triangle multiple-choice questions from Triangles (Class 9 Maths) - tap an answer for instant feedback and a step-by-step solution. 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.
Master Sum of Sides and Angles in a Triangle on RankByte
Step-by-step solutions, mock tests, live ranks and streaks - free to start.
Get early access