What are the pictures of corner graphics?

Acute triangle: An acute triangle refers to a triangle with three angles less than 90 degrees. In an acute triangle, the largest angle is called acute angle.

Right triangle: A right triangle is a triangle with an angle of 90 degrees. In a right triangle, the other two angles add up to 90 degrees.

Obtuse triangle: An obtuse triangle refers to a triangle with an angle greater than 90 degrees. In an obtuse triangle, the largest angle is called obtuse angle.

Positive Angle: If and only if the angle is between 0 and 90 degrees, the angle is positive. Positive angles are usually represented as arcs with small openings.

Adjacency complementary angle: Adjacency complementary angle refers to the situation that the sum of the degrees of two angles is 180 degrees. If an angle is x degrees, then its adjacent complementary angle is (180-x) degrees.

Complementary angle: Complementary angle refers to the situation that the degrees of two angles add up to 90 degrees. If an angle is x degrees, then its complementary angle is (90-x) degrees.

Diagonal: Diagonal refers to the diagonal formed by two angles in a graph. The degrees of the vertex angles are equal.

Congruent angle: congruent angle means that the degrees of two angles are equal. If an angle is x degrees, then its congruent angle is also x degrees.

In a word, an angle is a figure composed of two line segments or two rays, and its size is usually expressed in degrees. In addition to the angles mentioned above, there are many other concepts and definitions related to angles, such as isosceles angle, sum of internal angles, sum of external angles, diagonal angle, internal angle on the same side, etc. These concepts and definitions are very important for understanding the properties and characteristics of angles and angles.

In daily life, the concept of angle has also been widely used, such as the angle formed by the minute hand and the second hand in clocks and watches, the angle between taxis, pedestrians or traffic lights, the angle that an airplane or ship needs to turn when sailing, and the angle in the structure of buildings or bridges. Different shapes of horns also appear in the fields of architecture, design, engineering, manufacturing, art and so on. Therefore, the research and application of angle shape is helpful for us to better understand and apply mathematical knowledge.