Question

Please hurry Interior and Exterior Triangle Angles

Answer 1

Solution:

Note that:

• Sum of interior angles = 180°
• (5x + 7) + (4x + 16) + (5x + 17) = 180

Simplify the equation to find x.

• (5x + 7) + (4x + 16) + (5x + 17) = 180
• => (14x + 40) = 180
• => 14x = 140
• => x = 10

Answer 2

Sum of angles=180

$\\ \rm\bull\rightarrowtail 5x+7+4x+16+5x+17=180$

$\\ \rm\bull\rightarrowtail 14x+40=180$

$\\ \rm\bull\rightarrowtail 14x=140$

$\\ \rm\bull\rightarrowtail x=10$