What Is a Sine Plate?
Set square, also known as set square, is a commonly used drawing tool. The triangle ruler has three corners and three sides. Each triangle ruler consists of two special right-angled triangles. One is an isosceles right-angled triangular ruler, and the other is a special-angled right-angled triangular ruler (hereinafter referred to as a slender triangle).
- -The block triangle has 1 right angle and 2 acute angles.
Both angles of the isosceles right-angled triangle are 45 °. Two identical isosceles right-angled triangles can be spelled into a square or a larger isosceles right-angled triangle. The two right-angled sides of an isosceles right-angled triangle are equal in length.
- The acute angles of the slender triangle are 30 ° and 60 °, respectively. Two identical slender triangles can be formed into a regular triangle. The length of the hypotenuse of the slender triangle ruler is twice the length of the short rectangular side.
- The multi-function triangle ruler is equipped with a rotating ring and a turn at the two acute angles of the original triangle ruler.
- 1. Using a triangle ruler, you can easily draw an angle of an integral multiple of 15 °. Especially a triangle ruler and
- As shown in the figure, the right-angle vertex of a triangle ruler is placed at any point B on the circumference. The two right-angle sides of the triangle ruler intersect the circle at two points A and C. Connect AC. The line segment AC is the diameter of the circle. Change the angle and use the same method to find another diameter DF of this circle. The intersection O of these two diameters is the center of the circle.