Let's prove that triangle ABH is congruent to triangle ACH
The above 2 triangles are right triangles due to the altitude AH
Angle B= Angle C (given)
Angle AHB = Angle AHC =90° (since AH is the altitude)
Then angle BAH = CAH (both complementary to B & C respectively
And AH is a common side
Now Tri. ABH = Tri. ACH because ASA, hence AB=AC
C) Construct a bisector of angle BAC
I suppose you could get there faster by claiming ΔABC ≅ ΔACB by ASA, then AB ≅ AC by CPCTC.
fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.
option a is correct.
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