## What is Kurai English?

The Japanese word kurai is an adjective that translates to mean “dark” or “gloomy.”

## What is an oblique triangle?

An oblique triangle is any triangle that is not a right triangle. It could be an acute triangle (all threee angles of the triangle are less than right angles) or it could be an obtuse triangle (one of the three angles is greater than a right angle).

## Do all triangles equal 180?

In a Euclidean space, the sum of angles of a triangle equals the straight angle (180 degrees, π radians, two right angles, or a half-turn). … Its difference from 180° is a case of angular defect and serves as an important distinction for geometric systems.

## Is the longest side of an oblique triangle always opposite the largest angle of the triangle?

The longest side in a triangle is opposite the largest angle, and the shortest side is opposite the smallest angle. Triangle Inequality: In any triangle, the sum of the lengths of any two sides is greater than the length of the third side.

## Can we have a triangle with two obtuse angles?

1 Answer. No, because if the triangle have two obtuse angles i.e., more than 90° angle, then the sum of all three angles of a triangle will not be equal to 180°.

## Why can a triangle only have one obtuse angle?

An obtuse triangle (or obtuseangled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle’s angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle.

## Can a triangle have all angles less than 60 degree?

No, a triangle cannot have all angles less than 60°, because if all angles will be less than 60°, then their sum will not be equal to 180°.

## Can a triangle have all angles more than 60 degree?

A triangle cannot have neither all the angles less than 60 degree nor greater than 60 degrees. All the angles in a triangle can never be less than 60 nor greater than 60. However all the angles can be acute ,whether only two of them.

## Can a triangle have 2 right angles?

No, a triangle can never have 2 right angles. A triangle has exactly 3 sides and the sum of interior angles sum up to 180°. … Thus, it is not possible to have a triangle with 2 right angles.

hypotenuse

## Can a right triangle be a scalene triangle?

In a right triangle, one of the angles is a right angle? an angle of 90 degrees. A right triangle may be isosceles or scalene.

## Which Triangle Cannot be drawn?

According to the first triangle inequality theorem, the lengths of any two sides of a triangle must add up to more than the length of the third side. This means that you cannot draw a triangle that has side lengths 2, 7 and 12, for instance, since 2 + 7 is less than 12.

## What are the six types of triangles?

The six types of triangles are: isosceles, equilateral, scalene, obtuse, acute, and right.

• An isosceles triangle is a triangle with two congruent sides and one unique side and angle. …
• An equilateral triangle is a triangle with three congruent sides and three congruent angles.

## What is the 4 types of triangles?

Triangle Types and Classifications: Isosceles, Equilateral, Obtuse, Acute and Scalene.

## What is S in Triangle?

Another is Heron’s formula which gives the area in terms of the three sides of the triangle, specifically, as the square root of the product s(s – a)(s – b)(s – c) where s is the semiperimeter of the triangle, that is, s = (a + b + c)/2. …

## What is S in the Herons formula?

What does s represents in Heron’s Formula? The s in Heron’s formula denotes the semi-perimeter of a triangle, whose area has to be evaluated. Semi-perimeter is equal to the sum of all three sides of the triangle divided by 2. S = (a+b+c)/2. Where a, b and c are three sides of a triangle.

## What is a height of a triangle?

A triangle’s height is the length of a perpendicular line segment originating on a side and intersecting the opposite angle. In an equilateral triangle, like △SUN △ S U N below, each height is the line segment that splits a side in half and is also an angle bisector of the opposite angle.

## Who found Heron’s formula?

Heron of Alexandria

## What is Heron’s Formula Class 9?

​ Students, we have learned to find the area of the triangles using a simple formula, that is, A = 1/2 x base x height where the base and height of the triangle is known to us. But in Heron’s formula, we will use the length of all three sides of the triangle to calculate its area. Now let us see how it is possible.

## How do you find area with 3 sides?

The area of a triangle is defined as the total region that is enclosed by the three sides of any particular triangle. Basically, it is equal to half of the base times height, i.e. A = 1/2 × b × h. Hence, to find the area of a tri-sided polygon, we have to know the base (b) and height (h) of it.