alleryWhy are triangles used in strong frames and supports?
AThey have equal sides
BThey have four corners
CThey never have right angles
DSide lengths fix the angles
Answer & Solution
Correct answer: D. Side lengths fix the angles
1. Three given side lengths fix the angles of a triangle.
2. So a triangle cannot change shape unless its sides or joints break.
3. A rectangle can collapse into a parallelogram under pressure.
_Source: Wikipedia, Triangle, Rigidity_
Keep practising Basic Geometrical Ideas
Browse all Basic Geometrical Ideas questions for CTET, or explore more Mathematics topics.
Related questions
In strict maths, a circle is only the boundary of which region?A ring-shaped region between two circles with the same centre is called what?What is the point equally far from every point on a circle called?What do we call half of a circle cut along a diameter?A line that goes into a circle and out again at two points is named what?Touching a circle at just one point, a straight line is called what?The region cut off from a circle by one chord, along with its arc, has what name?A region bounded by two radii and an arc of a circle is called what?