Perpendicular: Perpendicular is two special positional relationships between two straight lines. When one of the four angles formed by the intersection of two straight lines is a right angle, two straight lines are perpendicular to each other, one of which is called perpendicular to the other, and the intersection point is called vertical foot.
A finite segment cut from a straight line is called a line segment, which is usually represented by two endpoints, such as line segment AB. When a line segment starts from a fixed point and moves in a certain direction, the trajectory formed is a ray, and the ray leads from a point to a graph composed of two rays, which is called an angle. This point is called the vertex of the angle, and both sides of each ray of the angle called the angle form a straight line. Such angles are called right angles, and each right angle is 10.
An angle less than 90 degrees is called an acute angle. An angle greater than 90 degrees and less than 180 degrees is called obtuse angle. The obtuse angle at which the serpentine rotates around the endpoint is called fillet. The fillet is 360 degrees. Fillets are used to indicate the size of angles. When two lines intersect at right angles, they are said to be perpendicular to each other. One of the straight lines is called the perpendicular of the other straight line, and their intersection point is called the vertical foot.
Two straight lines that do not intersect on the same plane are called parallel lines. The length of a parallel line connecting two line segments is called the distance between two points. The distance between two points is the length of the vertical line segment from a point outside the line to the line. The distance from a point to a line refers to the distance between any point in two parallel lines and the other line. The distance between parallel lines is a closed figure surrounded by three line segments, which is called triangle.
A triangle with three internal angles all acute. An acute triangle has a triangle with a right angle inside. Two sides with right angles are called right angles, and the side opposite to right angles is called hypotenuse. A right triangle with an obtuse angle is called an isosceles triangle with two equal sides, the other side is called a waist, and the angle between the two waists is called a vertex. The two corners of the bottom are called two isosceles triangles with equal right angles.
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What are parallel and perpendicular to each other?
Parallelism: In the same plane, two disjoint straight lines are parallel to each other. Perpendicular: Perpendicular is two special positional relationships between two straight lines. When one of the four angles formed by the intersection of two straight lines is a right angle, two straight lines are perpendicular to each other, one of which is called perpendicular to the other, and the intersection point is called vertical foot.
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What are parallel and perpendicular to each other? (figure)
Parallelism: In the same plane, two disjoint straight lines are parallel to each other. Perpendicular: Perpendicular is two special positional relationships between two straight lines. When one of the four angles formed by the intersection of two straight lines is a right angle, two straight lines are perpendicular to each other, one of which is called perpendicular to the other, and the intersection point is called vertical foot. A finite section cut from a straight line is called a line segment, which is usually represented by two endpoints, such as line segment AB. When a line segment moves from a fixed point to a certain direction, the trajectory formed is a ray. A ray leads to a figure composed of two rays from a point called an angle. This point is called the vertex of the angle, and both sides of each ray of the angle called the angle form a straight line. Such an angle is called a right angle. A right angle is 65,438+080 degrees. An angle of 90 degrees formed by a right angle is called a right angle. An angle greater than 90 degrees and less than 65,438+080 degrees is called an obtuse angle. Oblique angle The angle formed by a snake line rotating around the endpoint is called fillet. The fillet is 360 degrees. Fillets are used to indicate the size of angles. Two straight lines intersect at right angles, so they are called perpendicular to each other. One of the straight lines is called the perpendicular of the other straight line, and their intersection point is called the vertical foot. The perpendicular lines of two straight lines do not intersect in the same plane, which is called parallel lines. The length of two line segments connected by parallel lines is called the distance between two points. The distance between two points is the length of the vertical line segment from a point outside the line to this straight line. The distance from a point to a line is a closed figure surrounded by three line segments. A triangle is called a triangle with three internal angles all acute. An acute triangle has a triangle with a right angle inside. Two sides with right angles are called right angles, and the side opposite to right angles is called hypotenuse. A right triangle with an obtuse angle is called an isosceles triangle with two equal sides. Two equal sides are called waist, the other side is called bottom, and the angle between the two sides is called vertex. The two angles on the base are called two isosceles triangles with equal right angles.
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What are parallel and perpendicular to each other?
Perpendicular to each other: the right angle formed by the intersection of two straight lines means that two straight lines are perpendicular to each other, one of which is called the perpendicular of the other, and the intersection of the two straight lines is called the vertical foot. Parallel to each other: two straight lines that do not intersect in the same plane are called parallel lines, or they are parallel to each other.
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What do you mean perpendicular and parallel to each other?
A finite section cut from a straight line is called a line segment, which is usually represented by two endpoints, such as line segment AB. When a line segment moves from a fixed point to a certain direction, the trajectory formed is a ray. A ray leads to a figure composed of two rays from a point called an angle. This point is called the vertex of the angle, and both sides of each ray of the angle called the angle form a straight line. Such an angle is called a right angle. A right angle is 65,438+080 degrees. An angle of 90 degrees formed by a right angle is called a right angle. An angle greater than 90 degrees and less than 65,438+080 degrees is called an obtuse angle. Oblique angle The angle formed by a snake line rotating around the endpoint is called fillet. The fillet is 360 degrees. Fillets are used to indicate the size of angles. Two straight lines intersect at right angles, so they are called perpendicular to each other. One of the straight lines is called the perpendicular of the other straight line, and their intersection point is called the vertical foot. The perpendicular lines of two straight lines do not intersect in the same plane, which is called parallel lines. Parallel lines connect the lengths of two line segments. It is called the distance between two points. The distance between two points is the length from a point outside the straight line to the vertical line segment of the straight line. The distance between two parallel lines is the distance from any point on a straight line to another straight line. The distance between parallel lines is a closed figure surrounded by three line segments, called a triangle with three acute angles. An acute triangle has a right triangle. Two sides with right angles are called right angles. The opposite side of a right angle is called a hypotenuse right triangle. There is a triangle with an obtuse angle. An obtuse triangle has two triangles with equal sides, called the waist, the other side is called the bottom, and the angle between the two waists is called the vertex. The two angles on the base are called isosceles triangles, and the right angles with equal sides are called isosceles right triangles.
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What do you mean perpendicular to each other? What are parallel lines?
Perpendicular means that a straight line is at right angles to another straight line, and these two straight lines are perpendicular to each other. The symbol "⊥". "is usually used to indicate that in geometry, two straight lines that never intersect (and never overlap) on the same plane are called parallel lines. 1. perpendicular to each other: there are two vectors a and b, and the necessary and sufficient condition for a⊥b is that A ⊥ B = 0, that is, (x 1x2+y 1y2)=0. In geometry and trigonometry, right angles are also called positive angles, which are 90 degrees. It is relative to a quarter of a circle (that is, a quarter of a circle), and two right angles are equal to a half angle (180). An angle smaller than a right angle is called an acute angle, and an angle larger than a right angle but smaller than a right angle is called an obtuse angle. A right angle is equal to 90 degrees, and the symbol is Rt∞. Second, parallel lines: parallel lines are an important concept in axiomatic geometry. The parallel axiom of Euclidean geometry can be expressed as "only one straight line is parallel to the known straight line at a point outside the straight line". However, its negative form "there is no straight line parallel to the known straight line at a point outside the straight line" or "there are at least two straight lines parallel to the known straight line at a point outside the straight line" can be used as a substitute for the parallel axiom of Euclidean geometry, and non-Euclidean geometry independent of Euclidean geometry can be deduced. If both lines are parallel to the third line, then the two lines are also parallel to each other.