Question

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Answer 1

Answer:

13. ABCD is a parallelogram (given)

DL perpendicular to AC

BM perpendicular to AC

a. AD = BC "AD and BC are parallel" (parallel sides are equal)

b. angle DAC = ACB "both angles are vertically opposite" ( vertically opposite angles are equal)

c. triangle ADL congurent to triangle CBM "

as AC is perpendicular to both DL and BM and as parallel sides are equal DA equals to CB as all sides are equal to each other. therefore the triangle ADL and CBM are congurent

d. DL = BM

DL perpendicular to AC

BM perpendicular to AC

(common) AC = DL ; BM