basicsgeo termslinestrianglesmore triangles 100 200 300 400 500
TRANSCRIPT
Basics Geo Terms Lines Triangles More triangles
100100100100100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500500
Describe these shapes
Congruent
100
Describe these shapes
Similar
200
Name all the types of symmetry this object
has
Vertical and horizontal line
And rotational symmetry
300
Find the midpoint between
(7, 4) and (1, -2)
(4, 1)
400
Find the slope of the line that contains
(2, 3) and (-1, 4).
m = -1/3
500
Describe this picture
Ray
100
x
54°
If the entire angle is 121° what is the value of x?
67°
200
Draw a segment bisector
Check answer
300
What is the contrapositive of
If angle A is obtuse, then the measure of angle A
is 120°.
If the measure of angle A is not 120°, then angle A
is not obtuse, .
400
Give an example of the symmetric property.
If a = b, then b = a.
500
How many right angles do perpendicular lines
form?
4
100
Describe the angles
1
2
Corresponding Angles
200
Solve the system
y + 2x = 1
y – 1/2x = 1
(0, 1)
300
Given the lines are parallel what can you tell about the given angles
1
2
Supplementary
400
Give two different ways to prove the lines are parallel
1 2
3 4
5 6
7 8
Alt int angles congruentAlt ext angles congruentCorr angles congruentCons int angles supp
500
Categorize the triangle (2 ways)
Right scalene
100
Solve for x.
12080
x
40
200
How can you prove the triangles are congruent?
HL
300
Give all the steps needed in a proof to prove the triangles are congruent.
Given: AB is parallel and congruent to CD
A B
CD
• Angle BAC is congruent to angle ACD- alt int
• AC congruent to self- reflexive• Triangle BAC congruent to
triangle DCA- SAS
400
See next slide
Give all the steps needed in a proof to prove AD congruent to BC
Given: AB is parallel and congruent to CD
A B
CD
• Angle BAC is congruent to angle ACD- alt int
• AC congruent to self- reflexive• Triangle BAC congruent to
triangle DCA- SAS• AD congruent to BC- CPCTC
500
Describe AB
Perpendicular bisector
100
The point of concurrency of the
perpendicular bisectors
Circumcenter
200
The point of concurrency of the
angle bisectors
Incenter
300
The point of concurrency of the medians is always
where?
Inside the triangle (the center of gravity)
(2/3 the distance from the vertex to the midpoint of the
opposite side)400
Where is the orthocenter of an obtuse triangle?
Outside the triangle
500