**New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Properties of Triangles Self Practice 10E Solution**

**(2) Classify the triangle as acute, obtuse or right. Measures of sides of all triangles are in the same unit.**

(a) 8, 11, 13

(b) 9, 11, 15

(c) 9, 40, 41

(d) 7, 10, 12

(e) 7, 8, 11

(f) 10, 24, 26

(g) 10, 12-1/2, 7-1/2

(h) 9, 13, 16

**Solution:**

**(3) Check whether each set of numbers forms a Pythogorean triplet. Write Yes or No.**

(a) 30, 40, 50

(b) 15, 36, 39

(c) 10, 12, 13

(d) 9, 12, 15

(e) 10, 15, 17

(f) 9, 14, 19

(g) 63, 16. 65

(h) 64, 48, 80

**Solution:**

**(4) Suppose, the numbers a, b anc c form a Pythogorean triplet. Is each of the following, also a Pythogorean triplet? Explain.**

(a) A + 1, b + 1, c + 1

(b) 2a, 2b, 2c

**Solution:**