How many acute angles does a triangle have at least and at most how many obtuse angles? 10

Obtuse angle. is an angle greater than 90 degrees, a triangle.

The three angles are 180 degrees, and if the triangle has more than two obtuse angles, it is more than 180 degrees, so at most one obtuse angle.

A triangle can have three acute angles, no problem, or two acute angles, but it is not a problem, but it is impossible to have only one acute angle, if there is only one acute angle, then the remaining two angles are obtuse angles or right angles, then the remaining two angles will be greater than 180 degrees, so it is impossible.

How many acute angles does a triangle have at least? How many obtuse angles are there at most?

A: A triangle has at least two acute angles, and at most only one obtuse angle.

Acute angle: Angles greater than 0° and less than 90° are called acute angles.

Obtuse angle: Angles greater than 90° and less than 180° are called obtuse angles.

A triangle has at least 2 acute angles. There is at most one obtuse angle.

The reason is as follows: if there is only one acute angle, the other two angles are greater than or equal to 90°, which contradicts the sum of the inner angles of a triangle to be 180°.

In the same way, if there are more than two obtuse angles, their angles are increased by more than 180°, which contradicts the inner angles of the triangle and 180°.

The sum of the three angles of a triangle is 180 degrees, so a triangle has at most one obtuse angle and can have three acute angles.

Because the obtuse angle is greater than 90 degrees, a triangle has at most one obtuse angle and at least two acute angles.

If you have a triangle, the total angle is 180 degrees, so you can have two acute angles at most, and more is not enough.

The first point of view is that the term "first" in this paragraph means that the parking space and garage should be rented out or ** to the owner first, and cannot be **leased or ** to a third party other than the owner, and if the owner has the ability to buy, it should be **; If the owner is not able to afford to buy, it should be rented out. The second view is that the so-called "first" should mean that the owner obtains the right of first refusal or the right of first refusal to lease the parking space and garage. When the developer or other property owner**, taxi space, or garage is concerned, the owner shall be notified that under the same conditions, the owner is superior to the person outside the community to buy or lease.

The third view, although "first" is not "priority", holds that "under the same conditions, priority should be given to the owners of all the buildings in the district to enjoy the right to use the parking space or garage".

The legislative purpose of this article is to restrict the developer from parking parking spaces and garages outside the community to seek benefits, so as to protect the interests of the owners of the community, so the so-called "preferential purchase" should not be emphasized because "preferential purchase" usually refers to under the same conditions, therefore, if the "preferential purchase" is emphasized, the developer can use this point to raise the price of the parking space, so that the owners in the community can not reachThe same conditions required for "pre-emption", so that the parking space** can be sold to outsiders for personal gain. Therefore, the first point of view should be adopted here.

2) "Owner" - the "owner" who has purchased a commercial house or only a "owner" who has purchased a parking space or garage

Common triangles are divided into ordinary triangles (the three sides are not equal) and isosceles triangles (isosceles triangles with unequal waists and bases, and isosceles triangles with equal waists and bottoms, that is, equilateral triangles); According to the angle, there are right triangles, acute triangles, obtuse triangles, etc., of which acute triangles and obtuse triangles are collectively referred to as oblique triangles.

The figure enclosed by three straight lines on the plane or three arcs on the sphere, and the figure enclosed by the three straight lines is called a plane triangle; The shape enclosed by three arcs is called a spherical triangle, also known as a trilateral.

The closed geometric figure obtained by connecting the three line segments end to end is called a triangle, and the triangle is the basic figure of the geometric pattern.

The instructions are as follows:

Suppose there is only one acute angle in a triangle, then the other two angles can only be two right angles, one right angle and one obtuse angle, and two obtuse angles.

While: 1. The sum of two right angles is 180 degrees, which contradicts the three inner angles of the triangle and 180 degrees.

2. A right angle and an obtuse angle are greater than 180 degrees, which is also contradictory to the three inner angles of the triangle and 180 degrees.

3. The two obtuse angles are also greater than 180 degrees, which is also contradictory to the three inner angles and 180 degrees of the triangle.

There are at least 2 acute angles, because two right angles are 180 degrees, so a triangle can only have one right angle at most, and the remaining two are acute angles.

Uh-huh, dear, you're welcome.

Look at what else you don't understand.

Ask where to pay attention.

If I pay attention, where will I see you in the future.

If you have a follower on it, you can find me.

At least one triangle.

There are 2 acute angles.

1. Acute triangle.

3 acute angles. 2. Right triangle.

2 acute angles. 3. Obtuse triangle.

2 acute angles.

There's about triangles:

1) A triangle is a closed plane shape composed of three line segments connected end to end, which is the most basic polygon. Generally, uppercase English letters are used for vertex markings, lowercase English letters are used to represent edges, and Arabic numerals are used to represent corners.

2) The sum of the three inner angles of a triangle is equal to 180 degrees.

The sum of any two sides of the triangle is greater than the third side.

The difference between any two sides of the triangle is less than the third side.

The outer angles of a triangle are equal to the sum of the two inner angles that are not adjacent to it.

Median line theorem, midline theorem, trilateral relationship theorem, Pythagorean theorem, projective theorem, sine theorem, cosine theorem, Menelaus theorem, Seva's theorem.

The outer angles of triangles in 7th grade math are easy to make mistakes.

A triangle has at least 2 triangles.

In a triangle, there are up to two acute angles.

1. There is a maximum of 1 obtuse angle in a triangle.

2. There are up to 3 acute angles in a triangle.

3. There is a maximum of 1 right angle in a triangle.

Analysis: Because the inner angle of the triangle is 180°, if there are two right angles, it is already 180°, and there can be no third angle. Similarly, if the obtuse angle is greater than 90°, if there are two inner angles and the sum is more than 180°, it is not a triangle.

There is a maximum of 1 obtuse angle in a triangle and a minimum of 2 acute angles. Because it is assumed that there are two (or more) obtuse angles in the triangle. Since the obtuse angle is defined as "an angle greater than 90°", the inner angle and balance thickness of the triangle are greater than 180°.

It does not conform to the axiom "the sum of the internal angles of a triangle is equal to 180°". This assumption is not valid. When there is an obtuse angle in the triangle, the sum of the other two angles is less than 90°, and the other two angles are determined to be acute angles; When there is a right angle in the triangle, the sum of the two angles of the other carrying segments is equal to 90°, and the other two angles are set as acute angles; When there are no right or obtuse angles in the triangle, the triangle is acute.

So in a triangle there is a maximum of 1 obtuse angle and a minimum of 2 acute angles.

2, 3, 4, 2, 2, 2, 2.

Triangle. Detailed introduction: It is a closed figure or number composed of three line segments that are not on the same straight line in the same plane, which are connected in order, and have applications in mathematics and architecture.

Formula: s 1 2ah area = base height 2. where a is the base of the triangle and h is the height corresponding to the bottom) Note:

The three sides can be the bottom, which should be understood as: half of the high product corresponding to the three sides is the area of the corner of the three shirts. This is the basis for finding the length of a line segment using the area method.

Extended content: Common triangles are divided into ordinary triangles (all three sides are not equal) and isosceles triangles (isosceles triangles with unequal waists and bottoms, and isosceles triangles with equal waists and bottoms, that is, equilateral triangles); According to the angle, there are right triangles, acute triangles, obtuse triangles, etc., of which acute triangles and obtuse triangles are collectively referred to as oblique triangles.

How many acute finger angles are there in a triangle at least? The sum of the inner angles of the triangle is 180 degrees, and if one angle is greater than or equal to 90 degrees, the sum of the other two angles will be less than or equal to 90 degrees, which is obviously two acute angles; If one angle is an acute angle and less than 90 degrees, since the sum of the other two angles must be less than 180 degrees, one of the angles must be less than 90 degrees of acute angles, so there are at least two acute angles in a three-angle angle.