What does a pair of triangles mean? The triangle plate has several corners

A pair means a pair. A triangular ruler includes an isosceles right-angled triangle with a base angle of 45°, and a right-angled triangle with two angles of 30° and 60° respectively.

Triangle: sān jiǎo bǎn. In our modern society, the triangle board (English set square) is one of the main drawing tools for learning mathematics and quantitative angles.

Each pair of triangles consists of two special right-angled triangles. One is an isosceles right-angled triangle plate, and the other is a right-angled triangle plate with special angles (hereinafter referred to as a thin triangle plate).

Uses: Using a triangle plate, you can easily draw an integer multiple of 15°.

In particular, a triangle board and a T-shaped ruler can be combined to draw a series of vertical lines in a bottom-up order. Matching a T-ruler with a triangle plate allows you to draw an angle of °. Diagonal lines are usually drawn from left to right when drawing.

With two triangles and a T-ruler, you can also draw a diagonal line of °.

With the combination of two triangles, you can draw parallel lines of any one of the drawing lines.

Two triangles can be pieced together to create angles of 135°, 120°, 150°, 75°, and 105°.

A pair of triangles contains two right-angled triangles, one for ° and one for °.

Why not? After I modified it, you said it didn't fit?

The triangle board is one of the main drawing tools for learning mathematics and measuring angles. Each pair of triangles consists of two special right-angled triangles. One is an isosceles right-angled triangle and the other is a right-angled triangle with a special angle.

An angle of 45 ° can be made by using an isosceles right-angled triangle, and an angle of 30 ° can be made by using one side of this angle as the bottom edge, that is, the small angle can be known to be 15 °, that is, an angle of multiples of 15 ° can be made by using a pair of triangles, etc.).

There are three triangles.

A triangle has 1 right angle, 2 acute angles. Both acute angles of the isosceles right-angled triangle plate are 45°, and the acute angles of the thin triangle plate are 30° and 60°, respectively.

Each pair of triangles consists of two right-angled triangles. The three angles of one of the triangles are °, which are acute angles, acute angles, and right angles.

The three angles of the other are °, which are acute angles, acute angles, and right angles.

Triangles can be used to easily draw angles in integer multiples of 15°. In particular, a triangle and a T-ruler can be used to draw a series of vertical lines in a bottom-up order. Diagonal lines are usually drawn from left to right when drawing.

With two triangles and a T-ruler, you can also draw a diagonal line of °. With the combination of two triangles, you can draw parallel lines of any one of the drawing lines. Two triangles can be pieced together to create angles of 135°, 120°, 150°, 75°, and 105°.

There are 3 corners on one triangle.

Triangle is a commonly used drawing tool. The triangular ruler has three corners and three sides, and each triangular ruler is composed of two special right-angled triangles. One is an isosceles right-angled triangular ruler, and the other is a right-angled triangular ruler with special angles (hereinafter referred to as a slender triangular ruler).

1.Both acute angles of the isosceles right-angle triangular ruler are 45°. 2.The acute angles of the slender triangular rulers are 30° and 60°, respectively.

There are two types of triangles: isosceles right-angled triangles: they have two waists of equal length with a side-to-length ratio of 1:

1:2 with two 45° acute angles and one 90° right angle. Right angled triangle plate with special angles:

The side-to-length ratio is 1:3:2 and has an acute angle of 30°, an acute angle of 60° and a right angle of 90°.

There are two ways for a triangle to look like:

1. Isosceles right-angled triangle: It has two waists of equal length, with a side-to-length ratio of 1:1:2, and two acute angles of 45° and a right angle of 90°.

2. Right-angled triangle plate with special angles: the side-length ratio is 1:3:2, with an acute angle of 30°, an acute angle of 60° and a right angle of 90°.

Triangle Plate Interpretation:

Drawing utensils are triangular sheets made of wood or plastic, etc. One of the corners is a right angle, and the other two corners are either 45° each, or one angle is 60°, and the other angle is 30°, which is also called a triangular ruler.