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Contents
Contents
- Constructing Triangles
- Constructing Parallel Line
- Constructing Perpendicular Bisector
- Constructing Angle Bisector
Constructing Triangles
Constructing Triangles
All Sides Given
All Sides Given
Draw line AB.
Use compass with AC as the radius and draw an arc from A.
Use compass with BC as the radius and draw an arc from B.
The meeting point of the arcs is C.
Join AC, join BC.
2 Sides, 1 Angle Given
2 Sides, 1 Angle Given
Draw line AB.
Use protractor to mark the angle A. Draw the line.
Use compass with AC as the radius and draw an arc from A.
The intersection of the line and arc is C.
Join BC.
Constructing Parallel Line
Constructing Parallel Line
Use compass with A as the centre, draw an arc above the line AB.
Use the same radius with B as the centre, draw another arc above the line AB.
Join top of two arcs with a straight line.
Constructing Perpendicular Bisector
Constructing Perpendicular Bisector
Use compass with A as the centre, draw two arcs above and below the line AB.
Use the same radius with B as the centre, draw two more similar arcs.
Join meeting points of arcs with a straight line.
Constructing Angle bisector of <BAC
Constructing Angle bisector of <BAC
Use compass with A as the centre, draw two arcs on lines AB and AC.
Use the same radius from cutting points (D, E), draw two more similar arcs.
Join meeting point of arcs and point A with a straight line.
Questions
Questions
- Construct a Triangle ABC such that <A = 50°, <B = 60°, AB = 10 cm
- Construct a Triangle DEF such that DE = 8 cm, <E = 50°, EF = 6 cm
- Draw a line AB = 10 cm. Construct the perpendicular bisector of AB
- Draw an angle <ABC = 60°. Construct the angle bisector of <ABC
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