Page 132 - ICSE Math 5
P. 132
Exercise 9.1
1. Name the angles shown below symbolically.
(a) A (b) (c)
X D
B
C Z Y E
F
2. Measure the following angles using a protractor. Classify the angles as acute, right,
obtuse or straight.
(a) (b) (c)
A P X
R
C
Q
B Y Z
(d) E F G (e) N (f) P
O Q
M
L
3. Measure the following angles using a protractor.
(a) C (b) A (c) P
B
C
O Q
D R
(d) (e) (f)
A M
Z
O B X Y N L
4. Construct the given angles using a protractor.
(a) DEF = 45° (b) XYZ = 155° (c) LMN = 105°
(d) PQR = 60° (e) RLM = 90° (f) ABC = 180°
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