Question

one of the two equal angles of an isoscles triangle measure 55 degree
. determine the other angle
​

Answer 1

Answer:

70 degree

Step-by-step explanation:

x+55+55=180

x=180-110

x=70

Answer 2

GIVEN:

An iscosceles triangle, in which two angles are 55⁰ each.

TO FIND:

The third angle of the iscosceles triangle.

SOLUTION:

Two angles are 55⁰ each

Let the unknown angle be 'x'

All the three angles in a triangle sum up to 180⁰. This is known as Angle Sum Property.

I.e, ∠1 + ∠2 + ∠3 = 180⁰

==> 55⁰ + 55⁰ + x = 180⁰

==> 110⁰ + x = 180⁰

==> x = 180⁰ - 110⁰

==> x = 70⁰

∴ The third angle of the triangle is 70⁰