problem: triangle has a right angle 1
a) Does an 7, 14, 15 triangle have a right angle?
b) Does an 5, 12, 13 triangle have a right angle?
answer: triangle has a right angle 1
a) Does an 7, 14, 15 triangle have a right angle?
a² + b² = c²
7² + 14² = 15²
49 + 196 = 225
245 = 225
No, it doesn’t have a right angle.
b) Does an 5, 12, 13 triangle have a right angle?
a² + b² = c²
5² + 12² = 13²
25 + 144 = 169
169 = 169
Yes, it does have a right angle.