18 - Geometry Flashcards
1
Q
Two equations for Area of a Triangle (not equilateral)
A
1/2 * base * height
(leg*leg)/2
2
Q
A
3
Q
A
4
Q
A
5
Q
A
6
Q
A
7
Q
A
8
Q
A
9
Q
A
10
Q
A
11
Q
A
12
Q
A
13
Q
A
14
Q
A
15
Q
A
16
Q
A
17
Q
A
18
Q
A
19
Q
A
20
Q
A
21
Q
A
22
Q
A
23
Q
A
24
Q
A
25
Q
A
26
Q
A
27
Q
A
28
Q
A
29
Q
A
30
Q
A
31
Q
A
32
Q
A
33
Q
A
34
Q
Similar shapes: ratio of the side is x:y, the ratio of the area is
A
x2:y2
35
Q
One way to estimate the area of a triangle is by
A
dividing it into smaller shapes.
36
Q
A
39
Q
A
40
Q
A
41
Q
A
42
Q
A
43
Q
A
44
Q
A
45
Q
A
46
Q
A
47
Q
A
48
Q
A
49
Q
A
50
Q
A
51
Q
A
52
Q
A
53
Q
A
54
Q
A
55
Q
A
56
Q
A
57
Q
A
58
Q
A
59
Q
A
60
Q
A
62
Q
A
63
Q
A
64
Q
A
65
Q
A
66
Q
A
67
Q
A
68
Q
A
69
Q
A
70
Q
A
71
Q
A
72
Q
A
73
Q
A
74
Q
What is the measure of angle ADB?
A
There is not enough information to know. Don’t assume that a line cutting through the 90 degree angle cuts it in half. In this case it is 50 degrees.
75
Q
A
76
Q
A
77
Q
A
78
Q
A
79
Q
A
80
Q
A
81
Q
A
82
Q
A
83
Q
A
84
Q
A
85
Q
A
86
Q
A
87
Q
A
88
Q
A
89
Q
A
