** 17) Which of the following are not the sides of a right angled triangle?**

(A) 3, 4, 5

(B) 1, √3, 2

(C) 1, 1, √2

(D) √3, √4, √5

** 18) What is the area of a square whose diagonal is 8?**

(A) 16

(B) 64

(C) 32

(D) 24

** 19) In the figure below, what is the perimeter of ∆ABC**

(A) 24

(B) 16

(C) 16+8√2

(D) 16+8√3

** 20) For the triangle below, which of the following relationship between and b is true**

(A) b = 60 - a

(B) a = b

(C) a + b = 90

(D) a = 90 - 3b

** 21) If the difference between the two acute angles of a right angled triangle is 8°, what is the measure of the smallest angle?**

(A) 37°

(B) 41°

(C) 42°

(D) 49°