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21 December, 15:30

Drag an answer to each box to complete this paragraph proof.

Given:

Triangle PQR

with

m∠P = (x) °

,

m∠Q = (3x) °

, and

m∠R = (5x) °

.

Prove: x = 20

By the triangle sum theorem, the sum of the angles in a triangle is equal to 180°. Therefore using the given and triangle sum theorem,

m∠P+m∠Q+m∠R=180°

. Using the substitution property,. Simplifying the equation gets 9x = 180. Finally, using the division property of equality,.

x = 9x = 10x = 20

(x) ° + (3x) ° + (5x) °=180°

(x) ° + (3x) ° + (5x) ° = (9x) °

m∠PQR=180°

+4
Answers (2)
  1. 21 December, 17:39
    0
    1. (x) ° + (3x) ° + (5x) °=180°

    2. x=20

    These are right.
  2. 21 December, 19:12
    0
    i took the test the answer is 1. (x) ° + (3x) ° + (5x) °=180°

    2. x=20
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