1. State whether the following angles are acute, obtuse or reflex:

(a) 127° (b) 351° (c) 32° (d) 100° (e) 27°

2. Find the value of the variables. Give an abbreviated reason selected from the following list for each answer:

Adj. ∠ s on st. line are supp.
∠ s at a pt. add to 360°.
Vert. opp. ∠ s equal.
∠ s of Δ add to 180o
∠ s of a quad. add to 360°

 

(a)

(f)

(b) 

(g)

(c)

(h)

(d)

 

(i)

 

(e)

(j)

 

3. Find the size of the angles marked by letters.

 

(a)

(d)

(b)

(e)

(c)

(f)