Page 314 - Math Smart - 7
P. 314
Constructing scalene triangles
Example 7
Use a protractor and a ruler to make
an accurate drawing of triangle
ABC given the sketch shown.
50 mm
70 mm
Use your ruler to measure c
1 and draw a line segment iiii|fin im|(i({ imp iiii|iii[ mi|iiif (iii|i[i[ ini{iii{ m
70 mm long. OcmI 2 3 4I 5 el 7
Label this line segment SC.
Position your protractor
2- at point B and measure
an angle of 60°.
Draw a construction
mark at 60°.
Use your ruler to draw a
5 construction line from point B,
through the 60° construction mark.
Measure BA = 50 mm.
Label the end of the line
segments.
Draw line segment AC.
Label the triangle with the
given information.
50 mm
70 mm
UNIT 14 Geometrical Constructions
