As given 51213 is just a number.
However, a triangle with sides 5, 12, & 13, forms a classic Pythagorean right angled triangle.
Yes
right angle
The right angle is formed by the intersection of the triangle's "legs".
Right Angle
Angle abc will form a right angle if and only if, segment ab is perpendicular to segment bc.
Yes
The word' perpendicular' means at a 'right angle', or ' 90 degrees '. So perpendicular lines always for a right angle.
right angle
Intersecting lines that form a right angle are perpendicular lines.
a quadrilateral where each angle is a right angle
A right angle is an internal angle equal to 90o You can tell if an angle is a right angle because it has a little symbol which is a square where the two lines meet to form the angle. A right angle is a quarter of a circle. Lines that are at a right angle are perpendicular to each other.
Two lines that form a right angle are Perpendicular. This can be show by an upside down T.
When two lines intersect to form a right angle they are called perpendicular.
the lines are perpendicular, which basically means the two lines intersecting form a right angle
Intersecting two perpendicular lines will form right angles.
The right angle is formed by the intersection of the triangle's "legs".
Roads don't always form an acute angle, they can form a right angle. If you are really picky, you might say that they can never form a perfect right angle, so two of the angles formed must be acute (and the other two obtuse).