Because they share a side, but don't overlap, we refer to angles XNT and TNO as ____________________.

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When two lines intersect they form four angles. A pair of those angles that are opposite each other are known as ______________________________.

One angle measures 47°, and another measures 43°. Based on their sum, we would refer to them as ______________________________.

One word to describe two angles whose sum is 180 degrees is "______________________________."

Line AB intersects segment EG at point F, cutting segment EG into two equal parts. Line AB is called the ______________________________ of segment EG.

Not only does a ________________________________________ divide a segment into two congruent segments, it also makes a 90 degree angle with the segment.

Draw an angle in the space below this question. Now draw a ray that starts at the angle’s vertex and divides the angle into two congruent angles. ________________________________________ is the name we give to this ray.

Mrs. Bruning observes several boys simply stuffing handouts into their backpacks. Based on her observation, she says, “Boys stuff handouts into their backpacks.” Mrs. Bruning has just made a(n) ______________________________ about the behavior of boys.

We proved that the sum of the interior angles of a triangle is 180 degrees. So the underlined statement is a(n) ______________________________.

When you use deductive logic to write an argument that a statement is true, we call that argument a(n) ____________________.