To calculate the area of a triangle you can use three different methods.
1) Area = 1/2 base x vertical height.
2) Area = √[s(s - a)(s - b)(s - c)]. Where s = 1/2(a + b + c) and a,b and c are the lengths of the sides of the triangle.
3) Area = 1/2ab sin C = 1/2ac sin B = 1/2bc sin A. Where a, b and c are the lengths of the
sides of the triangle and A,B and C are the angles opposite the side with the same (lower case) name.
180 degrees
No, they cannot.
Yes
yes
Calculate the area of the room. Calculate the area of the window (or whatever opening) Room Area*100/Window Area
180 degrees
8
88
No, they cannot.
never
A isosceles triangle
yes
Yes
length x width = area
The sum of the angles in a triangle is 180 degrees.
Scalene triangle has no sides of same length
It could be an isosceles triangle or a scalene triangle.