Page 315 - Math Smart - 7
P. 315
Example 8
Use your protractor and a ruler to draw triangle DEF, given that D = 25°,
f=35° and Df=6.5cm.
Draw a rough sketch of the
information given.
6.5 cm
Use your ruler to measure and
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^ draw line DF = 6.5 cm.
Ocul 2 3 4 5 6
Label the line segment DF.
Position the centre of your protractor
^ at point D and measure an angle of 25°.
Draw a construction mark at 25°.
Use your ruler to draw a construction
line from point D, through the
25° construction mark.
Position the centre of your protractor
^ at point F and measure an angle of 35'
Draw a construction mark at 35°.
Use your ruler to draw a construction
^ line from point F, through the
35° construction mark.
Draw and label the completed triangle.
7 Do not remove the construction lines.
6.5 cm
