Does anyone know anything bout angles?

Complementary is when the two angles add up to 90 degrees.

Supplementary is when the two angles add up to 180 degrees.

To find a complementary angle do 90 minus the given angle.

To find a supplementary angle do 180 minus the given angle.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct