A tool shaped like a half circle used to measure angles.
What is a protractor?
100
Lines that will never touch. They are the same distance apart.
What are parallel lines?
100
The supplement of 160°.
What is 20°?
100
A triangle with equal sides and angles.
What is an equilateral triangle?
200
An angle whose measure is less than 180° but greater than 90°..
What is an obtuse angle?
200
The unit used to measure angles.
What is degrees?
200
Angles formed when a transversal intersects two parallel lines. One is located inside the parallel lines and the other is located outside, and they lie on the same side of the transversal.
What are corresponding angles?
200
The complement of 45°.
What is 45°?
200
The sum of the angles in a triangle.
What is 180°?
300
An angle whose measure is 180°.
What is a straight angle?
300
The number of degrees shown on the protractor when going from left to right.
What is 180°?
300
Angles that lie outside of the parallel lines and on opposite sides of the transversal.
What are alternate interior angles?
300
The complement of 16°.
What is 74°?
300
The missing angle of a triangle with one angle measured at 56° and another at 34°.
What is 90°?
400
A pair of angles who sum is 180°.
What are supplementary angles?
400
The measure in the middle of the protractor.
What is 90°?
400
Angles that lie on the inside of parallel lines and on opposite sides of the transversal.
What are alternate interior angles?
400
The supplement of 30°.
What is 150°?
400
A triangle with no equal side or angles.
What is a scalene triangle?
500
A pair of angles whose sum is 90°.
What are complementary angles?
500
It is where you place the protractor to measure the angle.
What is the vertex?
500
Angles formed when parallel lines are cut by a transversal. They are on the inside of the parallel lines and on the same side of the transversal. They are also supplementary.
What are same-side interior angles?
500
The complement of 89°.
What is 1°?.
500
A triangle with only 2 equal sides and 2 equal angles.