find the area of isosceles triangle with two equal angles of 45° each and two equal sides of 20 cm
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Given, that two angles are 45 , 45
by angle sum property, The third angle is 90°
The triangle is Right angled .
Given that The triangle is a isosceles triangle.
We know that in a triangle, if bases are equal then the sides other than base are equal .
Given the side which is equal to the other one, it's length = 20cm..
Now, Area = 1/2bh = 1/2*20*20 = 200cm²
by angle sum property, The third angle is 90°
The triangle is Right angled .
Given that The triangle is a isosceles triangle.
We know that in a triangle, if bases are equal then the sides other than base are equal .
Given the side which is equal to the other one, it's length = 20cm..
Now, Area = 1/2bh = 1/2*20*20 = 200cm²
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