Can someone smart help me with this question plz:)

By the way the select is complementary or congruent

The angles of an equilateral triangle are congruent. Let the measure of each angle be xx. Then, by the Triangle Sum Theorem, x + x + x = 3x = 180 degrees. Solving for x gives x = 60 degrees.

Step-by-step explanation:

An equilateral triangle is a triangle with 3 congruent sides, and if the sides are all congruent, that also makes the angles congruent to one another. So to find out what each angle measurement would be, all you would do is divide 180 by 3, giving you a total of 60.

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

send it over

step-by-step explanation: