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)
|