The vertex angle of an isosceles triangle measures 120⁰. Find the measure of each of its base angles.
The vertex angle of an isosceles triangle measures 120⁰. Find the measure of each of its base angles.
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Answer:
X=45
Step-by-step explanation:
Now
Letthebaseanglebex
then
x+x+90=180
2x=180−90
2x=90
x=
2
90
∴x=45
Hence,thebaseangleoftheangleofisoscelestriangleis45
Let each base angle of isosceles triangle be x.
The two angles are equal in isosceles triangle....
x + x + 120° = 180° (Angle sum property of traingle)
2x + 120° = 180°
2x = 60°
x = 30°
Each of its base angle is 30°.