Short Answers of Geometry (Mathematics B /4MB1)

 Geometry (2014-2016)

  1.   $\angle B C D=125  $
  2.   (a) $18^{\circ}$ (b) $(56+18) \quad$
  3.   $ 24 \quad$
  4.   $ 15^{\circ} \quad$
  5.   $ x=42$
  6.   (a) $2 \quad$ (b) $2 \quad $
  7.   (a) $120^\circ$ (b) $30^\circ$
  8.   $12$
  9.   $8 .60(\mathrm{~cm})$
  10.   (b) no of sides $=7$
  11.   (a) diagram (b) diagram (c) diagram
  12.   (a) 3 (b) 3 
  13.   (a) $40^{\circ}$ (b) $5.22(\mathrm{~m})$ (c) $18.1\left(\mathrm{~cm}^2\right) \quad$
  14.   $n=13$
  15.   $\angle B A C=10^{\circ}$
  16.   $\angle O A B=30^{\circ}$
  17.   $ C X=x=3, X E=6 \mathrm{~cm}$ 
  18.   (a) $50^{\circ}$ (b) $65^{\circ}$ (c) $35^{\circ} \quad$
  19.   $ \angle C O D=40^{\circ} $
  20.   (a) $x=24$ (b) $y=31$
  21.   (a) $F B=24$ (b) $r=10 \quad $
  22.   Show
  23.   (a) $D A=72 \mathrm{~cm}$ (b) $A C=39.8 \mathrm{~cm}$, radius $=19.9 \mathrm{~cm} \quad$
  24.   $16^{\circ} \quad $
  25.   (a) $10 \mathrm{~cm}$ (b) $A E=5 \mathrm{~cm}$ (c) $A B=3 \mathrm{~cm}$ (d) $7.16 \mathrm{~cm}$
  26.   (a) $E C=16.2(\mathrm{~cm})$ (b)$ 9.24$, $9.37 \rightarrow 9.41 \quad$ (c) $12.9 \rightarrow 13.2 \quad$
  27.   (a) $\angle C D A=62^{\circ} \quad$ (b) $\angle C B A=118$
  28.   radius $=6 \mathrm{~cm} \quad$
  29.   (a) show (b) Explain
  30.   (a) 7 (b) 19
  31.   (a) $50^\circ$ (b) $\angle BAD = 95, \angle BCD = 85$ (c) $\angle QDA=130, \angle DEA=130$
  32.   (a) $E F=10.0 \mathrm{~cm} \quad$ (b) show  (c) $E B=3.38$
  33.   (a)(i) $80^{\circ} \quad$ (ii) $62^{\circ}$ (b) show (c) $34^{\circ} \quad$
  34.   $A X=12 \mathrm{~cm}$
  35.   (a) S Labelled (b) $T$ labelled (c)(i) $306^{\circ}\left( \pm 3^{\circ}\right)$ (ii) 9 or $10 \mathrm{~km}$
  36.   (a) diagram (b) diagram (c) $ 9.1 \mathrm{~cm}( \pm 0.1) $
  37.   (a) diagram (b) diagram (c) diagram 
  38.   Diagram
  39.   (a) Diagram (b) $4 .3( \pm 0.1) \mathrm{cm}$
  40.   (a) Diagram (b) diagran (c) $22.6 \mathrm{~km}( \pm 0.5 \mathrm{~km}$ $=(\mathrm{1 mm}) $
  41.   (a) diagram (b) diagram (c) $6.9( \pm 0.2) \mathrm{cm}$ (d) region shaded
  42.   (a) Diagram (b) diagram
  43.   (a) Diagram (b) Diagram (c) $\angle A P M=55( \pm 1)^{\circ}$

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