In an isosceles triangle there are two equal sides and two equal angles. In a triangle ABC, if angle A is between the sides of equal length, then angles B and C are equal.
Without knowing which angle (A, B or C above) is 66o there are two possible answers:
The third angle measures 18 degrees.
62 degrees
An isosceles triangle, because the angles of a triangle add up to 180 and you already know that one angle measures 120 degrees, the other is 30, and so the unknown angle must also be 30 degrees. Since two of the angles are the same, two of the sides are going to be the same, making it an isosceles triangle.
A triangle has 180 degrees.A right triangle has exactly one angle measuring 90 degrees.If you know that one of the other angles of the triangle is 20 then your third angle is:180-90-20 = 70 degrees.
Ninty (90) Degrees Or More In a Right Angle Triangle And Other Math Perpendicular Triangles Always Measure 180 /Or/ / And / 90 Depending On The Concepts You Do With The Triangle
The third angle measures 18 degrees.
right triangle and the other angle would be 70 degrees. Hope I helped :)
62 degrees
105
60 degrees. There are 180 degrees in a triangle.
The third angle is 34.5 degrees
A right angle
False because the 3rd angle has to be a right angle of 90 degrees because the 3 angles of any triangle add up to 180 degrees.
25 degrees
If you're talking about a triangle, the third angle is 80 degrees.
That depends on the sizes of the other 2 angles if it's a right angle triangle then the other acute angle would be 70 degrees.
The other acute angle in that triangle is 40 degrees.