1. A Triangle given the 3 sides
A powerpoint presentation by
Carmelo Ellul
Head of Department (Mathematics)

2. A Triangle given the 3 sides
Task:
Construct a triangle ABC having
AB = 5 cm, BC = 7 cm and AC = 3.5 cm.
Making a Rough Sketch:
Draw a rough sketch of the triangle.
Label its vertices. A
Write the length of each side.
5 cm
3.5 cm B C
7 cm

3. A Triangle given the 3 sides
Construct line BC = 7 cm long. A C B
7 cm
5 cm
3.5 cm
Centre B draw an arc radius 5 cm.
Centre C draw an arc radius 3.5 cm.
Label the point of intersection of the two arcs A.
Join AB, AC.
Write down the lengths. A
5 cm
3.5 cm B
7 cm C

4. A Triangle given the 3 sides
Construct line BC = 7 cm long. A C B
7 cm
5 cm
3.5 cm
Centre B draw an arc radius 5 cm.
Centre C draw an arc radius 3.5 cm.
Label the point of intersection of the two arcs A.
Join AB, AC.
Write down the lengths. A
RESTART
5 cm
3.5 cm
END SHOW B
7 cm C