DIU IVLAS MAIM.
> Chapter 7: Adjacent and Vertical Angles > Section Exercises 7.1 > Exercise 11
Tell whether the angles are adjacent or vertical. Then find the value of 2.
75
(4x
- 2

vertical; x=25

4x-25=75

4x=75+25=4x=100

4x/4=100/4 x=25

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

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