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24jgrove
15.07.2019 •
Mathematics
The following is an incomplete flowchart proving that the opposite angles of parallelogram jklm are congruent: parallelogram jklm is shown where segment jm is parallel to segment kl and segment jk is parallel to segment ml. extend segment jm beyond point m and draw point p, by construction. an arrow is drawn from this statement to angle mlk is congruent to angle pml, alternate interior angles theorem. an arrow is drawn from this statement to angle pml is congruent to angle kjm, numbered blank 1. an arrow is drawn from this statement to angle mlk is congruent to angle kjm, transitive property of equality. extend segment jk beyond point j and draw point q. an arrow is drawn from this statement to angle jml is congruent to angle qjm, alternate interior angles theorem. an arrow is drawn from this statement to angle qjm is congruent to angle lkj, numbered blank 2. an arrow is drawn from this statement to angle jml is congruent to angle lkj, transitive property of equality. two arrows are drawn from this previous statement and the statement angle mlk is congruent to angle kjm, transitive property of equality to opposite angles of parallelogram jklm are congruent. which reasons can be used to fill in the numbered blank spaces? 1alternate interior angles theorem 2alternate interior angles theorem1corresponding angles theorem 2corresponding angles theorem 1same-side interior angles theorem 2alternate interior angles theorem1same-side interior angles theorem 2corresponding angles theorem
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Ответ:
(B) corresponding angles theorem
Step-by-step explanation:
Given: A parallelogram JKLM is shown where segment JM is parallel to segment KL and segment JK is parallel to segment ML.
To prove: Opposite angles of parallelogram are equal.
Construction: Extend segment JM beyond point M and draw point P, Extend segment JK beyond point J and draw point Q.
Proof:
It is given that A parallelogram JKLM is shown where segment JM is parallel to segment KL and segment JK is parallel to segment ML.
Extend segment JM beyond point M and draw point P--------By construction
and Extend segment JK beyond point J and draw point Q----By construction
thus, ∠MLK≅∠PML and ∠JML≅∠QJM (Alternate interior angles theorem) (1)
Then, ∠PML≅∠KJM and ∠QJM≅∠LKJ (corresponding angles theorem) (2)
Using equation (1) and (2) and using the transitive property of equality, we have
∠MLK≅∠KJM and ∠JML≅∠LKJ
therefore, opposite angles of the given parallelogram JKLM are congruent.
Hence proved.
Ответ:
Option B)
The value of x is 20 and y is 10
Step-by-step explanation:
Here, in a given right triangle
ΔABC, m∠B = 90°
Now,
tanθ = opposite ÷ adjacent
tan 60° = 10√3 ÷ y
√3 = 10√3 ÷ y
y = 10√3 ÷ √3
y = 10
Now,
sinθ = opposite ÷ hypotenuse
sin 60° = 10√3 ÷ x
√3 ÷ 2 = 10√3 ÷ x
√3 × x = 10√3 × 2
x = 20√3 ÷ √3
x = 20
Thus, The value of x is 20 and y is 10
-TheUnknownScientist