Page 346 - Start Up Mathematics_7

Chapter 12
Review Exercises (d) (e) (f)
Multiple Choice Questions
1. b 2. d 3. c 4. c 5. b
6. c 7. c 8. d 9. d

Solve Mentally
(g) (h)
True or False
1. False 2. False 3. True 4. True 5. True
6. True 7. True 8. True 9. False 10. False
Fill in the Blanks 5. (a) (b) (c) (d) (e)

1. greater 2. 100° 3. equidistant
4. perpendicular bisector 5. exterior
6. > 7. hypotenuse, sum 6. (a) (b) (c) (d) (e)
Answer in One Word or a Line
1. The lines are either parallel or intersecting.
2. By making corresponding angles equal or alternate interior
angles equal 7. (a) (b) (c)
3. A rough sketch of the triangle should be made.
4. A unique triangle can be constructed if its three sides are 3 2 3
given.
5. Yes 6. A ruler and a compass

Thinking Skills (d) (e) (f)
2. scalene 4. altitude is shorter
5. (a) 4.8 cm (b) 50° (c) obtuse 2 4 1
Exemplar Problems
1. b 2. a 3. False (g) (h)
4. Students to do on their own.
5. Students to do on their own. 4 6
6. Students to do on their own.
7. Students to do on their own.

Chapter 13 8. We get same figure if we shade
according to other diagonal. Yes
Exercise 13.1
1. (a) A, T (b) B, K (c) H, I
2. Key, mug , golf stick, an axe 9. (a) 0 (b) 0 (c) 2 (d) 0 (e) 8
(for question 1 and 2 answers may vary)
3. (a) angle bisector or altitude or median ( all are (f) 0 (g) 0 (h) 2 (i) 2 (j) 1
identical)
(b) diagonal (c) diameter
(d) perpendicular bisector of the chord joining end points
of the arc.
10. (a) (b)

4. (a) (b) (c)

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