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qwelly [4]
3 years ago
13

PLEASEEE HELPPP 30 POINTSSS!!!

Mathematics
1 answer:
Luden [163]3 years ago
3 0

Answer:

174; 132; 203; 118; 73; 20°.

Step-by-step explanation:

1) the sum of the internal angles of the given figure is:

S=180*(n-2), where 'n' is number of the angles.

2) according to the rule above the sum of all the internal angles is 720°;

3) according to the item 2, m∠A+m∠B+m∠C+m∠D+m∠E+m∠F=720°. If all the angles are known, then it is possible to re-write this equation as:

6x+(3x+45)+7x+(4x+2)+(2x+15)+(x-9)=720;

23x=667; ⇔ x=29.

4) if x=29, then m∠A=174; m∠B=132; m∠C=203; m∠D=118; m∠E=73; m∠F=20°.

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