Step-by-step explanation:
Given,
Vertex angle= thrice of other base angles=3b
let base angles be- b
3b+b+b=180
5b=180
b=180/5
Hence, b=36
Answer:
The angles opposite to equal side of an isosceles triangle are base angles which are equal.
The angle between the equal side is angle
of vertex.
Explanation
Let base angles be x
Let angle of vertex be y.
As base angle is four times of its vertical angle that is x = 4y
Since, sum of interior angles of triangle is 180°So,
x + x + y = 180 deg
4y + 4y + y = 180 deg
9y = 180 deg
y = 20 deg
x = 4(20 deg)
80°
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Answers & Comments
Step-by-step explanation:
Given,
Vertex angle= thrice of other base angles=3b
let base angles be- b
3b+b+b=180
5b=180
b=180/5
Hence, b=36
Answer:
The angles opposite to equal side of an isosceles triangle are base angles which are equal.
The angle between the equal side is angle
of vertex.
Explanation
Let base angles be x
Let angle of vertex be y.
As base angle is four times of its vertical angle that is x = 4y
Since, sum of interior angles of triangle is 180°So,
x + x + y = 180 deg
4y + 4y + y = 180 deg
9y = 180 deg
y = 20 deg
x = 4(20 deg)
80°
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