Triangles
A triangle with a right angle
What is a right triangle?
The three types of angles found inside triangles
What are acute, right and obtuse
These angles are opposite of each other in the same intersection
What are vertical angles?
A part of a straight line that is bounded by two points and contains every point on the line between those two points
What is a line segment?
Angles are this when they have the same measure
What is congruent?
A triangle with all acute angles
What is an acute triangle?
An angle that is equal to 180 degrees (NOT 2 angles added together)
What is a straight angle?
These angles have a sum of 90 degrees
What are complementary angles?
Where the endpoint of 2 rays meet, or the corner of an angle
What is the vertex?
The sum of the angles of a triangle
What is 180 degrees?
A triangle with all equal length sides
What is an equilateral triangle?
The pairs of angle located inside the parallel lines
What are interior angles?
Two angles that share a common vertex and are side by side
What are adjacent angles?
Two lines in a plane that never intersect
What are parallel lines?
The pairs of angles located outside the parallel lines
What are exterior angles?
A triangle with one obtuse angle
What is an obtuse triangle?
The pairs of angles located inside the parallel lines and on opposite sides of the transversal
What are alternate interior angles?
These angles have a sum of 180 degrees
What are supplementary angles?
Two lines whose intersection forms a right angle
What are perpendicular lines?
A triangle with no side lengths equal
What is a scalene triangle?
A triangle with 2 congruent sides
What is an isosceles triangle?
These angles are in the same position in different intersections and they are congruent
What are corresponding angles?
If two angles are supplementary and one is 173 degrees, what is the measure of the other angle?
What is 7 degrees?
A line that intersects two or more other lines in a plane
What is a transversal?
The pairs of angles located outside the parallel lines and on opposite sides of the transversal
What are alternate exterior angles?