The sum of all angles in a triangle is 180 degrees. with 90 degrees (the right angle) spoken for, that leaves 45 degrees each for the remaining two angles.
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The altitude line is perpendicular to the base and bisects the apex of the isosceles triangle.
Yes if the isosceles triangle is a right isosceles triangle because that leg opposite the hypotenuse is the height
a right triangle
yes a isosceles triangle has a right,obtuse and acute angle.
Yes, it is called a right isosceles triangle. The the longest side is across from the right angles as usual, and the other two sides are of equal distance