Answer:
x = 103⁰
Step-by-step explanation:
127+40+90+x = 360⁰
257+x = 360⁰
x = 360⁰- 257⁰
x= 103⁰
Just add the vi/t to both sides. vf=a+vi/t
The measure of angle D is 39 degrees.
Since it’s an isosceles triangle, the two unmarked angles are equal. Since you know there are 180° in a triangle, subtract 102° from 180° to get 78°. Then, cut that in half since you need to divide it equally among the two remaining angles.