## What are the properties of triangle Class 7?

The properties of the triangle are:

• The sum of all the angles of a triangle (of all types) is equal to 180°.
• The sum of the length of the two sides of a triangle is greater than the length of the third side.
• In the same way, the difference between the two sides of a triangle is less than the length of the third side.

## What are the properties of all triangles?

The properties of a triangle are:

• A triangle has three sides, three angles, and three vertices.
• The sum of all internal angles of a triangle is always equal to 180°. This is called the angle sum property of a triangle.
• The sum of the length of any two sides of a triangle is greater than the length of the third side.

What is the triangle 7 class?

A triangle having all sides equal is called an equilateral triangle. A triangle having two sides equal is called an isosceles triangle. A triangle having all sides of different lengths is called a scalene triangle. A triangle whose each angle measures less than 90° is called an acute-angled triangle.

### What are angle properties?

The angle properties of lines are: Vertically opposite angles are equal, for example a = d, b = c. Adjacent angles add to 180o, for example a + b = 180o, a + c = 180. o. Corresponding angles are equal, for example a = e, b = f, c = g, d= h.

### What is angle sum property of a triangle class 7?

The angle sum property of a triangle:The total measure of the three angles of a triangle is 180°. A triangle is said to be equilateral if each one of its sides has the same length.In an equilateral triangle, each angle has measure 60°.

What is the property of Pythagoras?

Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse. Here, the hypotenuse is the longest side, as it is opposite to the angle 90°.

## How many altitudes can a Class 7 triangle?

3 altitudes
Every triangle has 3 altitudes, one from each vertex.

## What is called triangle?

A triangle is a 3-sided polygon sometimes (but not very commonly) called the trigon. Every triangle has three sides and three angles, some of which may be the same.

What is another name for triangle?

• set of three.
• ternion.
• three.
• threesome.
• trey.
• triangle.
• trilogy.
• trine.

### What Pythagoras theorem Class 7?

Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse.

### What are the three characteristics of a triangle?

A triangle is a simple closed curve bounded by three sides. A triangle has three sides, three angles, and three vertices. These three sides, three angles, and three vertices define a triangle. (1) Opposite side of a particular angle. (2) Angle opposite to a particular side.

What are the two types of special triangles?

Two Special Triangles: Equilateral and Isosceles Equilateral Triangle: A triangle in which all three sides are of equal length is called an equilateral triangle. In an equilateral triangle (i) all sides have the same length and (ii) each angle has measure 60°

## What are the sides and sides of a triangle?

Triangle: A triangle is a simple closed curve made of three line segments. It has three vertices, three sides and three angles. Here in ΔABC, it has Sides:,, . Vertices: A, B, C. Angles: ∠BAG, ∠ABC, ∠BCA. The side opposite to the vertex A is BC. The angle opposite to the side AB is ∠BCA.

## What is the base of an isosceles triangle?

An isosceles triangle’s base is its non-equal side. The base angles of an isosceles triangle have equal measures. All of the sides of a triangle are different lengths. There are no two angles that are the same. Any two sides of a triangle have a length that is more than the length of the third side.