If ab = bc in triangle abc, then which of the following must be true?
angle a is less than angle c
a is equal to c
a is greater than c
a is greater than b

Angle A is equal to angle C

Step-by-step explanation:

If ab = bc in triangle ABC, then triangle ABC is an isosceles triangle because two sides are equal. In an isosceles triangle, the base angles are equal. Therefore,

Angle A is equal to angle C

The diagram of the triangle ABC is shown in the attached photo. If

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation:

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: