A pair of opposite angles formed by intersecting lines.
What are vertical angles?
Write the congruency statement.
CAB is congruent to RPQ
C=R
A=P
B=Q
Set up a proportion for the following similar triangles:
(15/5)=(9/3)=(?/4)
Classify the triangle:
Obtuse Isosceles
(one angle greater than 90o, 2 congruent sides)
Solve for x.
x=28
A pair of angles that add up to 180 degrees.
What are supplementary angles?
Are these two triangles congruent? If so, by what shortcut?
Congruent by SSS
Are the following triangles similar? If so, by what shortcut (AA or SSS)?
Similar by AA.
Classify the triangle:
Right Scalene
(one right angle, no congruent sides)
Find x, y, and z. Hint: think about what types of angles are shown.
y=76o (vertical angles)
x=104o(linear pair)
z=104o
A pair of angles that adds up to 90 degrees.
What are complementary angles?
Are these two triangles congruent? If so, by what shortcut?
Congruent by SAS.
Are the following triangles similar? If so, by AA or SSS?
Similar by SSS.
scale factor of 1.4
Classify the triangle:
(all sides & angles are congruent)
Find the missing angle.
?=59
A pair of angles that form a line and add up to 180 degrees.
What is a linear pair?
Are these two triangles congruent? If so, by what shortcut?
Congruent by ASA.
Are the following triangles similar? If so, by SSS or AA?
Not similar
25/20=1.25
20/16=1.25
22/18=1.22
What type of triangle has an angle greater than 90o?
Obtuse triangle
Solve for x:
x=65o
The sum of all angles in a triangle.
What is 180 degrees?
Which of the following do not show triangles are congruent?
SSS . AAA
ASA . SAS
AAS . SSA
AAA & SSA
The following triangles are similar. Find the missing side.
x=14
What type of triangle has all 3 angles less than 90o?
Acute triangle.
Find the missing angle.
B=25o