If two angles are ________ angles, then they have equal measures.
There are 180 degrees in ____ a circle.
A(n) ____ Chart Proof is a concept map where statements are placed in the boxes and the reason for each statement are placed under the box.
The intersection of a transversal and two lines forms _____ angles.
We often use a(n) __________ to measure angles.
An angle that measures less than 90° is _____.
If ∠A and ∠B are ___________ of the same angle, then ∠A and ∠B are congruent.
An angle greater than 180° is called a(n) ______ angle.
A two-______ proof uses a table and explicitly places the statements in the first ______ and the reasoning in the second ______.
When we refer to an angle as ∠ABC, we mean the actual angle object. If we want to talk about the size or the _______ of the angle, we often write it as m∠ABC.
All right angles are _________.
A(n) _______-circle is a right angle.
An angle that measures exactly 90° is _____.
Two positive angles that together form a right angle are called _____________ angles.
If two lines are cut by a transversal and the corresponding angles are congruent, the lines are ________.
Two positive angles that form a straight line together are called _____________ angles.
If ∠A and ∠B are ___________ of the same angle, then ∠A and ∠B are congruent.
Alternate ________ angles are outside the two parallel lines and on opposite sides of the transversal
Linear Pair _________: If two positive angles form a linear pair, then they are supplementary.
To measure an angle, we line up the central mark on the base of the protractor with the ______ of the angle we want to measure.
When added together, two positive angles that form a straight line together total 180 degrees, forming a(n) ______ pair.