# Need help with 8 and 9 in geometry ?

Would #8 be B?

Would #9 be C?

### 2 Answers

- RealProLv 71 month agoFavorite Answer
Do you double check your answers?

(6x-3) + (10x+8) + (49-2x) = 180

14x + 54 = 180

x = 9

H = 98°

G = 51°

I = 31

GI > HI > GH D.

Note: nowhere in the problem does it mention degrees. When measures of angles are in degrees, it needs to say °.

9 yes the 2nd longest side is opposite the 2nd largest angle

- 冷眼旁觀Lv 61 month ago
8.

Sum of interior angles of a triangle = 180°

(6x - 3) + (10x + 8) + (49 - 2x) = 180

14x = 126

x = 9

m∡G = 6*9 - 3 = 51

m∡H = 10*9 + 8 = 98

m∡I = 49 - 2*9 = 31

In a triangle, the greater angle has a greater opposite side.

m∡H > m∡G > m∡I

GI > HI > GH

The answer: D. GH < HI < GI

====

9.

In a triangle, the greater angle has a greater opposite side.

m∡A > m∡B > m∡C

Hence, BC > AC > AB

20 mm > AC > 12 mm

A and B is not the answer because AC < 20 mm

D is not the answer because AC > 12 mm

The answer: C. 13 mm