Download Geometry #2 Test 1. Pairs of Angles (Page 392) 2. Measure Angles

Geometry #2 Test
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Pairs of Angles (Page 392)
Measure Angles (Page 394)
Angle Measures (Page 404, 408, and 418)
Similar Figures (Page 416)
Transformations (Page 426-428)
Perimeter and Area of Rectangles (Page 450)
Area of a Parallelogram (Page 452)
Area of a Triangle (Page 454)
Vertical: angles across from eachother
(the measures are the same)
Adjacent: share a common side and vertex
Complementary: sum of measures is 90°
(must be sitting side by side)
Supplementary: sum of measures is 180°
(must be sitting side by side)
45°
180°
90°
360°
Add all sums and subtract from total measure
Triangle: 180°
Quadrilateral: 360°
Polygons: Divide into triangles (# of triangles), multiply
times 180° or take the number of sides and subtract
two; then multiply time 180°
5-2 = 3
180 x 3 = 540°
To find one angle measure: take the number above and
divide by the number of sides/angles (this only works
for regular figures where all sides/angles are the same)
540 ÷ 5 = 108°
Set up a proportion and solve, for side lengths
Angles: are always the same
J
M
30°
12ft
9 ft
N
K
75°
O
L
5 ft
NO = 3.75 ft
< K = 75°
12 5
= 45 12
9 x
3.75
12 45.0
36
90
84
60
Translation/Slide: move a figure along a line
Rotation/Turn: around a point
Reflection/Flip: over a line
Perimeter: Add the Sides of the figure
Area: Multiply length times width (squared)
Perimeter:
5 + 5 + 3.5 + 3.5 = 17 cm
3.5 cm
Area:
5 x 3.5 = 17.5cm²
5 cm
A = b x h (squared)
11 in.
8 in.
19 in.
19 x 8 = 152 in.²
A = (1/2) b x h or (b x h) ÷ 2 (squared)
17 x 14 = 238 ÷ 2 = 119 m²
or
8.5 x 14 = 119 m²
17 x 7 = 119 m²
17 m
14 m
22 m
Angles:
straight: exactly 180°
obtuse: more than 90°, less than 180°
acute: less than 90°
right: exactly 90°
Show 90°, 180°, 270° Clockwise Rotation
270°
90°
180°