Theorems 21-30
Geometry Theorems 21-30
Terms
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- Theorem 30
- The measure of an exterior angleof a triangle is greater than the measure of either remote interior angle.
- Theorem 25
- If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of that segment.
- Theorem 23
- If two angles are both supplementary and congruent, they are right angles.
- Theorem 27
- If the slopes of two nonvertical lines are equal, then the lines are parallel.
- Theorem 22
- If A = (x1, y1) and B = (x2, y2), then the midpoint M = (xm, ym) of segment AB can be found using the midpoint formula. M = (xm, ym) = ( (x1+x2) divided by 2, (y1+y2) divided by 2)
- Theorem 29
- If a lines slope is the opposite recripocal of another line's slope, the two lines are perpendicular.
- Theorem 24
- If two points are equidistant from the endpoints of a segment, then the 2 points determine the perpendicular bisector of that segment.
- Theorem 28
- If two lines are perpendicular and neither is verical, each line's slope is the opposite recripocal of the other.
- Theorem 26
- If two nonvertical lines are parallel, then their slopes are equal.
- Theorem 21
- If two angles of a triangle are congruent, the sides opposite the angles are congruent.