Bridge Design and Building

Mathematics of truss angles - Easy

 

In architecture and engineering, a  truss is a

supporting structure or framework composed of

beams, girders, or rods, commonly made of steel or

wood lying in a single plane. A truss usually takes the

form of a triangle or combination of triangles, since this

design ensures the greatest rigidity. 

 

Your teacher will show you the rules about angles

in triangles, quadrilaterals, intersections and parallel lines.

Here is  a brief summary:

 

• Sum of the angles in a triangle = 180°

• Sum of the angles in a quadrilateral = 360°

• Opposite angles are equal

• For two parallel lines and a transversal, 

corresponding angles are equal, and alternate angles

are equal.

 

Task

Attempt all questions in the worksheets (at right) then check your answers (below).