write the given statement of the following theorem. if one angle is 90degrees, the the other two add to 90 degrees

180° degree angles ok mam

For this case we have that the sum of the angles of a triangle is equal to 180 degrees.

We have then:

x+y+z=180<br/>

Where,

x, y, z: angles of the triangle

If one of the angles is equal to 90 degrees,

We have:

x+y+90=180<br/>

Clearing we have:

x+y=180-90<br/><br/>x+y=90<br/>

if z = 90 then,

x+y=90

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.