No.
90 degree triangles are always similar.
Acute triangles have angles less than 90 degrees. Right triangles have 90 degree angles.
it is a series of isosceles triangles with all 90 degree angles and consist of 17 triangles
All right angle triangles have a 90 degree angle and two acute angles that add up to 90 degrees
No, not all triangles have a 90 degree angle, so not all are perpendicular.
No. A triangle may have a 90-degree angle, but not all triangles do. The only requirement for being called a triangle is that it is a closed figure with 3 sides.No. A triangle may have a 90-degree angle, but not all triangles do. The only requirement for being called a triangle is that it is a closed figure with 3 sides.No. A triangle may have a 90-degree angle, but not all triangles do. The only requirement for being called a triangle is that it is a closed figure with 3 sides.No. A triangle may have a 90-degree angle, but not all triangles do. The only requirement for being called a triangle is that it is a closed figure with 3 sides.
No, only right angle triangles, but all the angles in a triangle will add up to 180 degrees.
Yes as well as a 90 degree angle
triangles squares rectangles i think most shapes could have a 90 degree angle except a circle
All triangles have 180 degrees.
It does not; if there is no 90 degree angle there is no hypotenuse.
If one corner is right, the other corners are together 90 degrees. So they're both still variable. So: no not all right triangles are similar