The sum of the angles in any triangle is 180 degrees. In an isosceles triangle, two angles are congruent. Let x be the measure of each of the congruent angles. Then we can set up the equation:
100 + x + x = 180
Simplifying and solving for x:
2x + 100 = 180
2x = 80
x = 40
Therefore, each of the congruent angles measures 40 degrees. Answer: A) 40 degrees.
Bill knows that one angle in an isosceles triangle measures 100 degrees. If the other 2 angles are congruent, what is the measure of each of those angles?
Responses
A 40 degrees40 degrees
B 80 degrees80 degrees
C 60 degrees60 degrees
D 100 degrees
1 answer
2 answers