Page 456 - Math Smart - 7

2. Draw a trapezium where the height is 3 cm, PQ is 7 cm 9. a) 300 b) 180 c) 30 d) 12 e) 15 f)6
and RS is 3.1 cm and the interior angies are 60", 120°, 9)15 h) 108 1)48 j)450 k) 270 I) 240
55° and 125°. Label the trapezium.
3. Draw a rhombus where the diagonals are 9 cm and 5 cm Check My Understanding (Pg 330)
each and label it. 1. a) 1 h and 26 min
b) 17 h and 8 min
Check My Understanding (Pg 318) c) 6 h 21 min
1. Draw polygons of the stated sides and interior angles. 2. 2 h and 24 min
2. Draw a parallelogram with measurements 8.5 cm by 3. 8 h and 10 min
6.5 cm. The interior angles are 65°, 115°, 65° and 115°. 4. 18:15
Label the parallelogram ABCD. 5. 07:40
3. Draw a rhombus with sides of 5.7cm. The interior angles
are 76°, 104°, 76° and 104°. Label the rhombus WXYZ. Check My Understanding (Pg 332)
a)
4. Draw a hexagon with sides that are 48 mm long. 1. a)20 min
A hexagon is drawn. b) 1 h 20 min
5. Draw a hexagon with sides that are 58 mm long. c) The one that departs at 11:15
d) 45 min
Revision (Pg 319) e)2
1. Draw lines that are of the stated length. f)3
2. Draw a line that is parallel to XV and cuts through point 2. a) 20:00
S. Label this line RT. b) 19:12
3. Draw triangles that are of the stated length and angles. c) No, it is delayed
4. a) Label the intersections between AB and GH, AB and d) It is cancelled
IJ, CD and GH and CD and IJ as the parallelogram e)2 h
PQRS. f) The Milan flight arrives 1 min before the Shanghai
b) 6.5 cm, 6.5 cm, 6.4 cm flight
5. Draw a right-angle triangle with a base (QR) 7.2 cm g) it departs 10 min earlier
long and height (PQ) that is 5 cm long. Label the
triangle PQR. Recall (Pg 333)
6. Draw a triangle that has the stated angies and length. 1. a) 5 m^ b) 9 cm^
7. Draw a square of sides 8 cm. Draw an isosceles triangle 2. 8 m
on one side of the square with the two sides measuring 3. 135 m^
5.6 cm. Label the drawing the same as the given 4. 48 cm
diagram.
8. Draw a trapezium that has the stated angies and base Check My Understanding (Pg 335)
of 9 cm and a height of 5 cm. Label the trapezium 1. a) 34 cm, 60 cm^ b) 2400 cm. 2700 cm^
respectively. c) 92 mm, 529 mm^ d) 380 mm, 8400 mm'
9. Draw a trapezium with a 9 cm long base (KL) and a 7 cm e) 24 cm, 32 cm^
long line (NM) that is parallel to KL and 5 cm away from a) 28 m b)60cm
KL. The trapezium should be symmetrical along the line a) 78 cm b) 58 cm
that runs through the center of the trapezium.
10. Draw the net diagram consisting of a pentagon and 5 Check My Understanding (Pg 338)
1. a) 184.5 cm' b) 900 m^
triangles.
2. a) 588 cm^ b)2025 m^
3. a) 10 units^ b) 16 units^
Unit 15 4. a)180 m^ b) 49 m^
5. a) 17 cm b) 9 cm
Recall (Pg 325)
6. a) 9 m b)8cm c)12mm
1. 5:13 7. a) Answers are correct if the length of the rectangles
2. 1 Week and 2 Days
when multiplied with the breadth gives ^2cm'
3. a) 04:00 b)10:25 c) 23:12 b) Answers are correct if the length and breadth of the
4. a) 12:45 a.m. b) 9:00 a.m. c) 4:39 p.m. rectangles when added up together and multiplied
5. 4:15 p.m. with 2 gives 30 cm'
a) 3024 cm'
Check My Understanding (Pg 327)
b) 1984 cm'
1. a) 01:00 b) 07:00 c) 16:00 d) 22:00 c) 1040 cm'
2. 8)02:45 b) 11:23 c) 14:05 d) 23:59 d)228 cm
3. a) 9 h and 30 min b) 5 h and 50 min
e) 188 cm
c) 3 h and 45 min d)6 h and 15 min
4. a) 360 min b) 195 min c) 560 min d) 10 min Try and Apply (Pg 339)
5. a) 480 s b)444s c) 1802 s a) i) 1600 m ii) 1600 m
6.4h b) area, larger, square
7.5 h and 50 min
8.8 min and 40 s

Answers