What is the answer and please explain it

See steps below for answer

Step-by-step explanation:

1) Set up an equation

Part 2:

One angle: 40 degrees

Second angle: x or 35 degrees

Third angle: 3x or  105 degrees

Therefore answer is

35, 40, 105

x=35°

Step-by-step explanation:

40° + 3x° + x°= 180°

40° + 4x° =180°

4x° = 180° - 40°

4x° = 140°

x° = 35°

From least to greatest :

x=35°

3x=35×3

=105°

therefore in order : 35°, 40°, 105°

triangle and cube

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have