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An isosceles triangle has a measure of 70o what is the measure of each base angle?
Wiki User
∙ 15y ago
To figure out what the measure of the base angles in an isosceles triangle are, it is important to first understand several things about an isosceles triangle.
1. A triangle has 180 degrees.
2. An isosceles has two equal sides, which means that it also has two equivalent angles.
3. In knowing at least any one angle of an isosceles triangle, it is possible to figure out the other two.
Since the base angles are unknown in this question, and they are equivalent to one another, it is a simple algebraic problem.
180 - 70 = 2A
180 is the number of degrees in a triangle
70 is the number of degrees taken up by angle C, with angles A and B being the equivalent base angles.
2a is the double of one base angle. Let's solve.
180 - 70 = 2A
110 = 2A
110/2 = A
55 = A
The measure of each base angle is 55.
Wiki User
∙ 15y ago
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5 If the non-base angle of an isosceles triangle has a measure of 70 degrees what is the measure of each base angle?
55 degrees
What is the measure of base angle if vertex angle of an isosceles triangle is 80?
The base angles will have equal angles of 50 degrees
If the vertex of an isosceles triangle equals 40 then the measure of each base angle is?
70
The measure of one base angle of an isosceles triangle is 52 what is the measure of the vertex?
180 - 2*52 = 76 both base angles are equal (property of an isosceles triangle) and total angles is 180
What are the measures of the Base angles of an isosceles triangle whose vertex angle has measure of 55?
Each base angle is 62.5 degrees
If the non-base angle of an isosceles triangle has a measure of 78 degrees what is the measure of each base angle?
51 degees
What is the measure of the vertex angle of an isosceles triangle if one of its base angle measure 50?
80 degrees
5 If the non-base angle of an isosceles triangle has a measure of 70 degrees what is the measure of each base angle?
55 degrees
If the non base angle of an isosceles triangle has a measure of 78 degree's what is the measure of each base angle?
(180 - 78) / 2...
What is the measure of the base angles of an isosceles triangle whose vertex angle has a measure of 50 degrees?
130 degrees is the measure of the base angles of an isosceles triangle whose vertex has a measure of 50 degrees.
What is the measure of a base angle of an isosceles triangle if its vertex angle measures 65?
57.5 degrees
What is the measure of the vertex angle of an isosceles triangle if a base angle is 42?
180 - twice 42
An angle not congruent to the base angles of an isosceles triangle?
The base angles of an isosceles triangle are congruent. The vertex angle of an isosceles triangle is not necessarily congruent to the base angles.
The exterior angle of a base angle in an isosceles triangle is 100 degrees What is the measure of the vertex angle?
20 degrees
What is the measure of base angle if vertex angle of an isosceles triangle is 80?
The base angles will have equal angles of 50 degrees
An exterior angle at the base of an isosceles triangle measures 110 find the measure of the vertex angle?
40
What is the measure of the base angle of an isosceles triangle if the vertex measures 38 degrees?
(180 - 38)/2 = 71 degrees (base angles of an isosceles triangle are congruent).
