The triangle abc, shown on the coordinate plane above, is dilated from the origin by scale factor r = 1/2. what is the location of triangle a'b'c'?

see explanation

Step-by-step explanation:

Since the dilatation is centred at the origin with a scale factor of .

Then the coordinates of the image are one half the coordinates of the original, that is

A(3, 4 ) → A'(1.5, 2 )

B(- 7, 2 ) → B'(- 3.5, 1 )

C(2, 2 ) → C'(1, 1 )

can someone answer this question plz

step-by-step explanation:

m∠a is 90°

m∠b is 40°