# What is an isosceles triangle short definition?

## What is an isosceles triangle short definition?

: a triangle in which two sides have the same length.

### What is another name for an isosceles triangle?

triangle; trigon; trilateral.

#### Which is a defining attribute of an isosceles triangle?

An isosceles triangle is a triangle that has (at least) two equal side lengths. If all three side lengths are equal, the triangle is also equilateral. Isosceles triangles are very helpful in determining unknown angles.

What are 3 properties of an isosceles triangle?

An Isosceles Triangle has the Following Properties:

• It has two sides of equal length.
• The angles opposite to equal sides are equal in measure.
• The altitude from vertex A to the base BC is the perpendicular bisector of the base BC.
• The altitude from vertex A to the base BC is the angle bisector of the vertex angle ∠ A.

What is the meaning of isosceles triangle Class 6?

An isosceles triangle is a type of triangle that has any two sides equal in length. The two angles of an isosceles triangle, opposite to equal sides are equal in measure.

## What is the other name of line of symmetry of isosceles triangle?

Thus, in an isosceles triangle the other name of the line of symmetry are median and the altitude of the triangle. From the above diagram it can be observed that the line of symmetry of the circle is infinite. Thus, in a circle the other name of the line of symmetry is the diameter of the circle.

### What is the synonym of circle?

wheel, move round, move round in circles, revolve, rotate, whirl, spiral, gyrate. 2’Adam circled the building’ go round, walk round, travel round, circumnavigate. orbit, revolve round.

#### What is the rule of isosceles triangle?

The rule for an isosceles triangle is that the triangle must have two sides of equal length. These two sides are called the legs of the triangle and the unequal side is called the base. The isosceles triangle theorem further states that the angles opposite to each of the equal sides must also be equal.

What is true for all isosceles triangles?

Properties of Isosceles Triangles Of course, the main property of isosceles triangles is their two congruent sides. In addition, all isosceles triangles also have congruent base angles. This property holds true for all isosceles triangles, no matter which direction their apexes point.

Are all isosceles triangles similar?

All isosceles triangles are not similar for a couple of reasons. The length of the two equal sides can stay the same but the measure of the angle between the two equal side will change, as will the base and the base angles.

## What is the difference between an isosceles and acute triangle?

Obtuse Triangle Definition. An obtuse triangle is one that has an angle greater than 90°.

• Properties of Obtuse Triangles.
• Obtuse Triangle Formulas
• Special Obtuse Triangles.
• Acute Triangle Definition.
• Properties of Acute Triangles.
• Acute Angle Formulas
• Special Acute Triangles.
• ### What is isosceles triangle and its properties?

An isosceles triangle is a triangle that has (at least) two equal side lengths. If all three side lengths are equal, the triangle is also equilateral. Isosceles triangles are very helpful in determining unknown angles. In an isosceles triangle, the two equal sides are called legs, and the remaining side is called the base.

#### Is an isosceles triangle always a 45-45-90 triangle?

A 45-45-90 triangle is also an isosceles triangle, which means its two legs are equal in length. All 45-45-90 triangles are similar. Line segments DE and FG are perpendicular to side AB of the 45-45-90 triangle, ABC.

How do you use isosceles triangle in a sentence?

Use “isosceles” in a sentence | “isosceles” sentence examples. isosceles. 1. The base angles of an isosceles triangle are equal. 2. A geometry class was using computers to construct isosceles triangles and prove that two of their angles were equal. 3. On one side for the red flag, an isosceles triangle a white seven horns star, The top