Q: How many triangles can you form if you draw all the diagonals of a rectangle?

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The answer would be 18.

Five of them

No not normally only if the parallelogram is in the form of a rectangle will it then have congruent diagonals.

Not always. You could form a kite. That means that the two adjacent sides would be congruent, not the two opposite sides.

Absolutely. Any two congruent right triangles will form a rectangle, and if the right triangles are isosceles right triangles, they will form a square.

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18

The answer would be 18.

right triangles and

4.

Five of them

Parallelograms of any form, a square, a rectangle, and a rhombus are just special parallelograms so all will form 2 pairs of isosceles triangles when a diagonal is drawn.

Either 12,14,16,or18 I think 18. * * * * * The correct answers is 4. You can draw only 3 diagonals from one vertex.

If a parallelogram is in the form of a rectangle then both diagonals are congruent in lengths.

The three major diagonals in an ordinary hexagon do not intersect at the same point. Therefore, in such a hexagon, the diagonals form 111 triangles.

A square

Sometimes as when the parallelogram is in the form of a rectangle then its diagonals are of equal lengths.

No not normally only if the parallelogram is in the form of a rectangle will it then have congruent diagonals.