Question

hola mates.....

ONLY FOR CLASS 9TH...

what r the important theorem's in chapter... triangles
....quadrilaterals
....lines and angles


plz guys it's important... plz list out these theorem's...

only meaningful answers plz...

thanks for the help mates...

#kratika

Answer 1

Hola ^_^

Here is the list of thereoms

1. Alternate angles are equal.
2. Vertically opposite angles are equal.
3. Sum of angles at a point is 180°
4. Angle sum property of a traingle.
5. Exterior angle property.

Triangles.
1. Isoceles thereom
2. If two sides of a triangle are unequal then the longer side has a greater angle opposite to it.
3. The greater angle has an longest side opposite to it.
4. Te sum of two sides of a triangle is greater than the third side.

Quadrilaterals.
1. Opposite sides of parallelogram
2. mid point thereom
3. opposite angles of a parallelogram
4. Diagonal of parallelogram.


Hope it helps !!