If one angle of a triangle is equal to the sum of the other two angles, the triangle must be:
If one angle of a triangle is equal to the sum of the other two angles, the triangle must be:
(a) scalene (b) right angled (c) obtuse angles (d) acute angled
5 views
1 Answers
(b) Let x, y and z is the angles, where x = y + z
x + y + z = 180° (angle sum property)
(y + z) + y + z = 180°
2(y + z) = 180°
y + z = 180°/2= 90°
x = 90°, hence triangle is right angled
5 views
Answered