A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
The vertex angle of an isosceles triangle measures 84°. What is the measure of base angle?
Solution:
We know that an isosceles triangle has three angles, and their measures add up to 180 degrees.
An isosceles triangle has at least 2 congruent sides, and the angles opposite the congruent sides are congruent.
It is given that the vertex angle of an isosceles triangle measures 84°.
Now let us assume the measure of each base angle is x because the that two angles measure the same.
⇒ x + x + 84 = 180
⇒ 2x + 84 = 180
By transposing we get,
⇒ 2x = 180 - 84
⇒ 2x = 96
Divide both the sides by 2 we get,
⇒ 2x/2 = 96/2
⇒ x = 48
Therefore, the measure of a base angle is 48°.
The vertex angle of an isosceles triangle measures 84°. What is the measure of base angle?
Summary:
If the vertex angle of an isosceles triangle measures 84° then the measure of a base angle is 48°.
Math worksheets and
visual curriculum
visual curriculum