two angles of a triangle are 30 degree and 45 degree what type of a triangle it is.. second question two angles of a triangle are 50 degree and 40 degree prove that the triangle is right angled ..third question two angles of a triangle are 65 degree and 36 degree what type of a triangle is it..
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Step-by-step explanation:
1.The first triangle is 90 degrees as the other two angles of triangle is 30 degree and 45 degree.
therefore,30 + 45 + required angle = 180(Angle sum property of a triangle)
So, Required angle = 180-(30+45)
=90 degree
It is a right angled triangle
2. let the other angle of the triangle be x
Therefore, 50 + 40 + x = 180
x = 180 - (50+40)
x =90 degree
Hence, proved
3. Let the other angle of the triangle be x
Therefore, 65 + 36 + x =180
x =180-(65+36)
x=79 degree
It is scalene or acute triangle
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