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Liono4ka [1.6K]
3 years ago
5

One angle on the base of an isosceles triangle is 30°. What is the measure of its vertical angle?​

Mathematics
2 answers:
REY [17]3 years ago
7 0

Answer:

120 degrees

Step-by-step explanation:

vertical angle of isoceles = 180 - 2(base angles) = 180 - 2(30) = 120

gizmo_the_mogwai [7]3 years ago
5 0

Answer:

isosceles triangle means both angle or sides equal so in this way

unknown angle + 30 + 30 = 180°

unknown angle+60=180

so unknown angle=120°

which is vertical angle

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