Question

find out which of them are right angle triangle
1.5cm 6cm 7.5cm
9cm 10cm 11cm
10cm 20cm 30cm
3.5cm 12cm 12.5
12cm 16cm 20cm​

Answer 1

Answer:

Find the answer below

Step-by-step explanation:

4. 3.5² + 12² = 12.5²

12.25 + 144 = 156.25

156.25 = 156.25

5. 12² + 16² = 20²

144 + 256 = 400

400 = 400

Answer 2

Answer:

Answer is below

Step-by-step explanation:

1. 5 cm = 5² = 25 ,

6 cm = 6² = 36 ,

7.5 cm = (7.5)² = 56.25

25 + 36 = 61

Therefore , not an right angled triangle.

2. 9 cm = 9² = 81 ,

10 cm = 10² = 100 ,

11 cm = 11² = 121 ,

81 + 100 = 181

Therefore , not an right angled triangle.

3. 3.5 cm = (3.5)² = 12.25 ,

12 cm = 12² = 144 ,

12.5 cm = (12.5) = 156.25 ,

12.25 + 144 = 156.25

Therefore , it is an right angled triangle.

4. 12 cm = 12² = 144 ,

16 cm = 16² = 256 ,

20 cm = 20² = 400 ,

144 + 256 = 400 .

Therefore , it is an right angled triangle.