You will find that flat, shiny surfaces produce the best reflections. This is why most mirrors are made of flat sheets of highly polished glass with a shiny silver coating behind them. Cut a small holes in a piece of card and tape a comb across the hole. In a darkened room, place the card in front of the torch, so that narrow beams of light come through the teeth of the comb. Hold a mirror in the beams of light so that it reflects the light.
Light is reflected off the mirror at exactly the same angle as it hits the mirror.
Stand two mirrors side by side and put a small object between them. Move the mirrors closer together and then further apart. Place two mirrors facing each other with an object between them. When they are opposite each other, you should be able to see endless reflections. Less and less light is actually escaping the two mirrors, so that when they are facing each other, all the light is trapped in bouncing between the two mirrors.