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UkoKoshka [18]
3 years ago
6

Drag a statement or reason to each box to complete this proof.

Mathematics
2 answers:
gayaneshka [121]3 years ago
8 0

Answer:

Step-by-step explanation:

Statements                                                                     Reasons

1. Quadrilateral ABCD with m∠A = (7x)°                            Given

m∠B = (5x)°, m∠C = (7x)° and m∠D = ( 5x)°

2. m∠A + m∠B + m∠C + m∠D = 360°                  The sum of the interior angle                                                                          

                                                                                 of the quadrilateral is 360°

3. (7x)° + (5x)° + (7x)° + (5x)° = 360°                         Substitution property

4.  24x = 360                                                           Combine like terms

5. x = 15                                                                 Division property of equality

yKpoI14uk [10]3 years ago
5 0

Given all four angles of a quadrilateral. Sum of all angles of a quadrilateral is equal to 360°.

So, m<A+ m<B+m<C + m <D = 360°.

7x+5x+7x+5x= 360 (Substitution property).

24x = 360 (Combine like terms).

x= 15 (Proved)

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