In Illustration A on the board, this is an acute angle.
What is angle ABC or CBF or FBD
100
In illustration B, this is what line l is called
What is the transversal
100
this is the number of degrees in a triangle.
What is 180 degrees.
100
Complementary angles add up to 180 degrees.
What is false...complementary angles add up to 90 degrees
100
A right triangle has exactly one of these.
What is a right angle?
200
In Illustration A, this is a pair of complementary angles.
What are Angles CBF and FBD
200
In illustration B, angles 2 and 3 are congruent to one another for this reason.
What is they are vertical angles
200
In illustration C, this is the value of x.
What is 47 degrees.
200
Equilateral triangles are always acute.
What is true
200
True or False. A triangle can be isosceles and scalene.
What is false. Both isosceles and scalene refer to side measures. Its not possible for a triangle to have 2 sides congruent and no sides congruent at the same time.
300
In Illustration A, if we know angle ABC has measure 42 degrees, this is the measure of angle ABE
What is 138 degrees
300
In illustration B, these are a pair of acute, alternate interior angles.
What are angles 4 and 5?
300
In illustration C, these are the two names we could give to the triangle.
What are acute and isosceles?
300
Vertical angles make a straight angle.
What is false. Vertical angles are congruent
300
In illustration B, angles 7 and 8 are this type.
What is supplementary?
400
In illustration A, if angle ABC has measure 42 degrees, this is the measure of angle ABD
What is 132 degrees
400
In illustration B, the measure of angle 1 is 60 degrees. This is the measure of angle 5 and how we know its measure.
What is angle 5 measures 60 degrees because it is corresponding to angle 1.
400
Can you make a triangle with sides 4, 6, and 15? Why or Why not?
No, 4 + 6 is not greater than 15
400
Sides of 8, 13 and 21 inches will make a triangle.
What is false. 8 + 13 = 21. its not greater than 21.
400
This is the difference between parallel and perpendicular lines.
What is parallel lines never touch and perpendicular lines intersect at right angles?
500
In illustration A, angles EBD and CBD are related in this way.
What is they are supplementary?
500
In illustration B, these are all the pairs of alternate exterior angles.
What is angles 1 and 8 and angles 2 and 7
500
These are the measures of three sides that will make a triangle.
Answers will vary
500
A triangle that is equilateral can also be obtuse.
What is False. Equilateral triangles must be acute--all angles are the same and measure 60 degrees.
500
Draw a triangle with one obtuse angle and two congruent sides and name it with two names.