In ΔOPQ, \text{m}\angle O = (2x-5)^{\circ}m∠O=(2x−5) , \text{m}\angle P = (3x-8)^{\circ}m∠P=(3x−8) , and \text{m}\angle Q = (10x-17)^{\circ}m∠Q=(10x−17) . What is the value of x?x?

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?