There are no 'diagonals' in a triangle. Each vertex is connected to both of the other vertices, by the sides.
0 they have no diagonals
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
If it is a 45° 45° 90° isosceles right triangle, then there are 2 sides that are perpendicular.
thank goodness for my math teacher, norm! he said only in an isosceles triangle. The bisector of the vertex angle of an isosceles triangle is perpendicular to the base! =)
it is a right triangle because a rhombus' diagonals are perpendicular
In general, an isosceles trapezium (or isosceles trapezoid) does not have perpendicular diagonals. The diagonals of an isosceles trapezium are equal in length and are symmetrical, but they intersect at an angle that is not necessarily 90 degrees. The only quadrilaterals that have perpendicular diagonals are special cases, such as kites and certain rhombuses.
No.
No.
perpendicular
The diagonals of an isosceles trapezoid are equal in lengths but are not perpendicular to each other at right angles.
0 they have no diagonals
yes.
You can't because triangles do not have diagonals but an isosceles triangle has 2 equal sides
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
If you mean an isosceles triangle then no because all triangles have no diagonals
No
Yes, the diagonals of an isosceles triangle are congruent. This is because an isosceles triangle has two sides that are equal in length, which creates two congruent triangles when the diagonals are drawn.