A side of the triangle below has been extended to form an exterior angle of 133°. Find the value of
x
one angle is 22 degrees and the other is 133
Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle
180 degrees minus interior angle = exterior angle and that the 3 exterior angles of a triangle add up to 360 degrees.
In any triangle exterior angle plus interior angles = 180 degrees
120 degrees. Each interior angle of an equilateral triangle is 60 degrees, so each exterior angle is 180 - 60 = 120 degrees It can also be worked out by the formula Exterior angle of a polygon = 360/no. of sides of the polygon = 360/3 = 120Each exterior angle measures 120 degrees and each interior angle measures 60 degrees because there are 180 degrees on a straight line.
A isosceles right angle triangle will have 2 equal interior angles of 45 degrees and 1 angle of 90 degrees with its largest exterior angle being 180 -45 = 135 degrees.
A right triangle has one exterior angle that's 90 degrees. No other kind of triangle has. All three of the triangle's exterior angles always add up to 360 degrees.
Interior angle+exterior angle = 180 degrees
Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle
When any side of triangle is extended outwards then exterior angle is formed. Sum of this exterior angle and adjacent interior angle = 180o. If exterior angle = 180o(straight angle) then interior adjacent angle is 0o which is not possible. So exterior angle can't be straight angle.
It is the equilateral triangle that has the largest exterior angle of 120 degrees
The sum of the exterior angles of a triangle is always 360 degrees. Therefore, each exterior angle of a triangle measures 120 degrees.
Each exterior angle measures 120 degrees
It is the regular equilateral triangle whose each exterior angle is 120 degrees
Because angles on a straight line will always add up to 180 degrees
They are all 60 degrees.
180 degrees minus interior angle = exterior angle and that the 3 exterior angles of a triangle add up to 360 degrees.
20 degrees