no not really
The special case of the HL (Hypotenuse-Leg) theorem states that in a right triangle, if the hypotenuse and one leg of one right triangle are congruent to the hypotenuse and one leg of another right triangle, then the two triangles are congruent. This theorem is useful for proving the congruence of right triangles without needing to know the measures of the angles. It simplifies the process of triangle congruence by focusing on the right triangle's defining features.
a triangle without any congruent sides is a scalenetriangle
We cannot determine without seeing the data for PRS & QRS. My guess though would be ASA Though it could also be SSS
If you know one side (s) and the opposite angle (a) then the hypotenuse = s/sin a...
I have to prove http://s5.tinypic.com/19ldma.jpg http://img22.imageshack.us/img22/9263/mathhlproofou4.jpg without using pythagorean theorem
Without any further information, you can't.
Without knowing the measurement of one of its legs it's impossible to work out using Pythagoras' theorem. So from an experienced guess the two legs could be 8 cm and 6 cm with an hypotenuse of 10 cm.
Simply because the Pythagorean Theorem is not true for any triangle that doesn't have a right angle in it. If a triangle has a right angle in it, then it satisfies the Theorem. If it hasn't, then it doesn't. And if it satisfies the Theorem, then it has a right angle in it, and if it doesn't, then it hasn't.
Without seeing the picture, I can't tell what's already known to be congruent, so there's no way I can figure out what 'else' is needed.
A question without any equal sides is a scalene triangle. A scalene triangle, by definition, is a triangle without any congruent sides. Of course, there are varying definitions, but they all have the same gist. Once again, a triangle without any equal sides is a scalene triangle!
It appears to be a question that involves Pythagoras' theorem of a right angle triangle whereas the dotted line represents the hypotenuse and without any relevant information the height of the ladder from the ground can't be worked out.
Yes simply with a protractor and a measuring device.