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Self Practice 8.1d (b) 7. (a)
C
1. (a) True (b) False Q
(c) True (d) True M P 7 cm
(e) True P
30°
Self Practice 8.1e
Q A B
1. a = 44°, b = 136°, c = 77°,
d = 57° (b) 47°
Self Practice 8.1g
2. p = 116°, q = 64° Self Practice
1. (a) 8.2a
Self Practice 8.1f 1. (a) (i) Vertically opposite
The following diagrams are not angles: ∠p, ∠q
drawn to actual scale. (ii) Adjacent angles at
1. (a) intersecting lines:
A 6 cm B ∠q and ∠r; ∠p and ∠r
(b) (i) Vertically opposite
(b) (b) angles: ∠a, ∠b
P 5.4 cm Q (ii) Adjacent angles at
(c) intersecting lines:
∠a and ∠c; ∠b and ∠c
R 7.3 cm S 45° (c) (i) Vertically opposite
angles: ∠t, ∠r
2. (a) (c) (ii) Adjacent angles at
intersecting lines:
∠t and ∠s; ∠r and ∠s
P Q
75° 2. (a) z
y x
z
(d)
(b)
(b)
z x
y
A B 105° z

(c) y
3. (a) Mastery 8.1 z z
1. (a) True (b) False x
(c) True (d) True
P Q
(e) True
Self Practice 8.2b
M 2. p = 45°, q = 45° 1. (a) x = 140°, y = 100°
3. 7 cm
(b) (b) x = 24°, y = 148°
4. p = 105°, q = 75°
5. p = 72°, q = 288° Self Practice 8.2c
M Q 6. (a) R 1. x = 66°, y = 58°
P 2. x = 90°, y = 25°
6 cm Mastery 8.2

4. (a) 60° 1. x = 34°, y = 62°
P Q P Q 2. 15°
M
(b) 5 cm 3. 28°

317
Answers

14 Ans Math F1.indd 317 11/10/16 12:23 PM