Search for: If vertices of a triangle are A(1,- 1, Z), B(2,0,- 1) and C(0,2,1), then the area of a triangle is If vertices of a triangle are A(1,- 1, Z), B(2,0,- 1) and C(0,2,1), then the area of a triangle is A6B26C36D46 Fill Out the Form for Expert Academic Guidance!l Grade ---Class 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12 Target Exam JEENEETCBSE +91 Preferred time slot for the call ---9 am10 am11 am12 pm1 pm2 pm3 pm4 pm5 pm6 pm7 pm8pm9 pm10pm Please indicate your interest Live ClassesBooksTest SeriesSelf Learning Language ---EnglishHindiMarathiTamilTeluguMalayalam Are you a Sri Chaitanya student? NoYes Verify OTP Code (required) I agree to the terms and conditions and privacy policy. Solution:Now,Δxy=121−11201021=12|1(0−2)+1(2−0)+1(4−0)|=12|−2+2+4|=2Δyz=12−1210−11211=12|[−1(−1−1)−2(0−2)+1(0+2)]|=12|[2+4+2]|=4Δzx=12211−121101=12|[2(2−0)−1(−1−1)+1(0−2)]|=12|[4+2−2]|=2∴ Area of triangle, Δ=Δxy2+Δyz2+Δzx2=22+42+22=24=26 Related content CBSE Class 6 Science Chapter 1 Components of Food MCQ Questions with Answers Mother’s Day Quiz with Answers CBSE Class 9 History Chapter 1 MCQ Class 10 Science MCQ Chapter 3 Metals and Non-Metals How to Crack NEET in Drop Year? CBSE Class 9 Social Science MCQ CBSE Class 10 Science MCQs Chapter 2 Acids Bases and Salts CBSE Class 10 Science MCQs Chapter 1 Chemical Reactions and Equations with Answers How to Convert CGPA into Percentage CBSE Class 6 MCQs for All Subjects with Answers