Ответ:
1)R:P :Q=3:7:5
R=3x
P=7x
Q=5x
R+P+Q=180°
3x+7x+5x=180°
15x=180°
x= 12°
R= 3×12=36°
P= 7x12=84°
Q= 5x12=60°
2)
A : C = 2:5
A, C - ?
A = 2x
C = 5x
A + C = 180° - 40°
2x + 5x = 140°
7x=140°
X=20°
A= 2×20=40°
C= 5×20=100°
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Answers & Comments
Ответ:
1)R:P :Q=3:7:5
R=3x
P=7x
Q=5x
R+P+Q=180°
3x+7x+5x=180°
15x=180°
x= 12°
R= 3×12=36°
P= 7x12=84°
Q= 5x12=60°
2)
A : C = 2:5
A, C - ?
A = 2x
C = 5x
A + C = 180° - 40°
2x + 5x = 140°
7x=140°
X=20°
A= 2×20=40°
C= 5×20=100°