In the diagram, the measure of angle 8 is 124°, and the measure of angle 2 is 84º.
1/2
5
87
3
What is the measure of angle 7?
56
84
96
124

Option A. 56°

Step-by-step explanation:

In the given diagram, the measure of angle 8 is 124° and ∠2 is 84°.

We have to find the measure of angle 7.

Since angle 7 and angle 8 are complementary angles (sum of angles on a line is equal to 180°)

m∠7 + m∠8 = 180°

angle 7 = 180° - m∠8

∠ 7 = 180° - 124° = 56°

Therefore, option A. 56° is the correct option.

the mean and mad

step-by-step explanation:

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

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