Prove that the perimeter of a triangle is greater than the sum of its altitudes

PQRS is a square and SRT is an equilateral triangle. Prove that PT=QT and angle TQR=15 degrees

Prove that the perimeter of a triangle is greater than sum of its three altitudes.

S is a point on side QR of a triangle PQR. Show that: PQ + QR + RP 2PS

can you give a brief proof for SSS congruence rule??

The sides of a triangle are 5 cm,12 cm and 13cm.find the length of perpendicular from the opposite vertex to the side whose length is 13cm

 Prove that in a quadrilateral the sum of all sides is greater than the sum of it's diagonals.

IN A RIGHT ANGLED TRIANGLE , ONE ACUTE ANGLE IS DOUBLE THE OTHER.PROVE THAT THE HYPOTENUSE IS DOUBLE THE SMALLEST SIDE

what is heron??.what is full form of SSS,ASS,RHS,SAS?

What is CPCT and can you explain the congruence rules ?

How do we prove the RHS congruence rule??

Which practise book is more suitable?R.D Sharma/Reliable Question Bank fot 9th grade Maths?

 what is the full form of cpct

 prove that each angle of a rectangle is a right angle ?

In Figure given below, ∠Q > ∠R, PA is the bisector of ∠QPR and PM