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791197
28.04.2021 •
Mathematics
Q4. a. A triangle has vertices (-2, 3), (1, 1) and (-1,-2).
a. Find the length of the sides .(3mks)
b. Name this triangle. (Imks)
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Ответ:
Step-by-step explanation:
Right triangle ABC is reflected over AC to form triangle AFC.
Triangle AFC dilated by a scale factor of two-thirds to form triangle DEC.
Reflection is a rigid transformation which preserves lengths and angles, then
Dilation is a transformation which maps the triangle into similar triangle, so
Thus,
Similar triangle have congruent corresponding angles, so
and proportional corresponding sides
Thus, correct options are: