Angles
Angle whose measure is 90°
What is right angle
Two lines that intersect to form a right angle
What is perpendicular
A triangle with all sides different lengths
What is scalene
A ray that shares a vertex with an angle and divides the angle into two congruent angles
What is an angle bisector
Two triangles that have exactly the same size and shape
What is congruent
Two angles whose sum is 90°
What is complementary angles
Two lines that are perpendicular to the same line
What is parallel
A triangle with all angles having a measure less than 90 degrees
What is acute triangle
The segment from a vertex of a triangle perpendicular to the opposite side
What is altitude
If triangle ABC is congruent to triangle DOG angle BCA is congruent to what angle?
What is angle OGD
Two angles whose sum is 180 degrees
What is supplementary angles
Two lines that intersect to form a right angle
What is perpendicular
A triangle with a least two sides the same length
What is isosceles
A line passing through the midpoint of a segment at a 90 degree angle
What is a perpendicular bisector
The slope of a line that is parallel to a line with a slope of -2 .
What is -2
Two angles directly across from each other when two lines intersect
What is vertical
Two angles that share a side and together form a line
What is linear pair
An angle formed when a side of a triangle is extended outside the triangle
What is exterior angle
A segment from the vertex of a triangle to the midpoint of the opposite side
What is a median
Triangle ABC is an isosceles triangle where AB= BC,
AB = 3x +6, BC = 4x + 3, and AC =20, then AB has what measure?
What is 3
Two angles who share a side and a vertex and don't overlap
What is adjacent angles
When two lines are cut by a transversal, both angles are inside the two lines but are on opposite sides of the transversal
What is alternate interior angles
The measure of a third angle of a triangle when one angle is 42 degrees and another is 90 degrees
What is 48 degrees
The slope of a line that is perpendicular to a line with a slope of 3.
What is -1/3
If triangle ABC has the following measurements: angle A = 4x, angle B = 3x-20, and angle C= x+40, then Angle B has what measure?
What is 40