Not always. You could form a kite. That means that the two adjacent sides would be congruent, not the two opposite sides.
4
Yes
A right-angle triangle is half of a square or rectangle. Draw a square or rectangle and draw a line from one corner to the corner diagonally opposite. You now have two triangles of the same area.
Draw a rectangle made with three squares. Then put a diagonal line through the center one. Tah-Dah
If you draw one diagonal across a parallelogram, it will split it into two congruent triangles. A rectangle is a parallelogram, with all four angles equal to 90°.
right triangles and
draw a rectangle and two triangles on top
4
if you draw a line from one corner of a rectangle to the opposite it creates two triangles
Only if the angles of the triangle are 90, 45, and 45.
Yes
You can't. You need some more information. If you only know the length of the hypotenuse, you can draw an infinite number of different right triangles that all have the same hypotenuse.
A right-angle triangle is half of a square or rectangle. Draw a square or rectangle and draw a line from one corner to the corner diagonally opposite. You now have two triangles of the same area.
Draw a rectangle made with three squares. Then put a diagonal line through the center one. Tah-Dah
If you draw one diagonal across a parallelogram, it will split it into two congruent triangles. A rectangle is a parallelogram, with all four angles equal to 90°.
why dont you draw the velocity of triangles?
Yes, they can. To demonstrate this draw a square on a sheet of paper. Draw a line diagonally from one corner to the one opposite. Cut along this line and you will have two triangles. Take them apart; if you put them together again in the right way you will have a square. Put together in different ways you can make an isosceles triangle or an equilateral parallelogram. If you do the same thing beginning with a rectangle, you will be able to reassemble the triangles to form a rectangle, isosceles triangle or a (non-equilateral) parallelogram.