Lines
Angles
Triangles
Vocabulary
Review
100
Is a series of points that extend in opposite directions.
What is a line.
100
Is a figure formed by TWO rays with a common endpoint.
What is an angle.
100
All congruent sides
What is an equilateral triangle.
100
Are angles with EQUAL measures.
What are congruent angles.
100
True or False: A polygon with the angles 90, 45, 55 form a triangle. Why or why not?
What is false. The sum of all the angles is greater than 180 degrees.
200
Is a part of a line with ONE endpoint and ALL of the points of the line on one side of the endpoint.
What is a ray.
200
Is the point of intersection of two sides of an angle or figure.
What is the vertex.
200
At least 2 congruent sides and angles.
What is an isosceles triangle.
200
An angle that = 180 degrees.
What is a straight angle.
200
If m∠C = 14˚, what is the measure of its supplement?
What is 166 degrees.
300
Is part of a line with two endpoints and all points in between.
What is a segment.
300
Angle between 0 and 90 degrees.
What is an acute angle.
300
No Congruent Sides
What is a scalene triangle.
300
Formed by TWO intersecting lines and are OPPOSITE each other.
What are vertical angles.
300
Find all the angles.
What is A and C = 144 degrees.
What is B = 36 degrees.
400
Are lines in the same plane that NEVER intersect.
What are parallel lines.
400
The sum of the measures of TWO angles is = to 180 degrees.
What are supplementary angles.
400
A triangle that has one angle that is greater than 90 degrees and no congruent sides.
What is an obtuse scalene triangle.
400
Are formed by TWO intersecting lines and are SUPPLEMENTARY.
What are adjacent angles.
400
If m∠1 = 35˚, find the measure of it's supplementary adjacent angle and it's vertical angle.
What is 145 degree supplemental adjacent angle and 35 degree vertical angle.
500
Lie in the same plane and have exactly ONE point in common.
What are intersecting lines.
500
The sum of the measures of TWO angles is = to 90 degrees.
What are complementary angles.
500
A triangle has a 35 and 55 degree angle, what is the measure of the 3rd angle?
What is 90 degrees.
500
Share a vertex and a side, but have NO interior points in common.
What are adjacent angles.
500
Find all of the angles if
What is