just use a scale factor! multiply all the dimensions by X and you'll have the dimensions of the new triangle. of course the angles and all are the same b.c theyre similar.
Find the perimeter by adding the lengths of the sides
By using trigonometry
Use Pythagoras' theorem if you know any two lengths of the triangle
45
The answer depends on what information you have but, basically, you need to add together the lengths of the three sides of the triangle.
You look at the lengths of the sided of the triangle. If the two lengths are same, the triangle is an isosceles triangle. If all the lengths are same, the triangle is an equilateral triangle. If none of the lengths are same, the triangle is a scalene triangle.
Find the perimeter by adding the lengths of the sides
The perimeter of a triangle is the distance around it. Add the lengths of the three sides to find the perimeter.
By using trigonometry
Use Pythagoras' theorem if you know any two lengths of the triangle
If you are only given the side lengths of a scalene triangle, it is impossible for you to find for the area, unless you are given more information... like the height of the triangle for example. If this is a right triangle you would like to find the area of, you can multiply the length of each leg with each other, and then divide that product by 2 to conclude the area of the triangle.
Add together the lengths of the three sides.
45
Surely you know how to find the third side of a right triangle, when you know the lengths of the other two. Find it, and then add up the lengths of the three sides to get the perimeter.
13 in
The answer depends on what information you have but, basically, you need to add together the lengths of the three sides of the triangle.
The area of any triangle is: 0.5*base*perpendicular height