Burt says:
i have drawn a triangle.
one side is 1" long, and it has angles of 90° and 20°.
max, you draw a triangle with the same two properties.
max says:
my triangle will be congruent to yours, because all triangles that have
those three properties must be congruent.
is max correct to say that all triangles with these properties must be congruent?
explain your answer.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

it would rotate about 180 degrees.