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Unit 5 Part 1: Study Guide
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Vocabulary words to know! Write a short definition in your own words for each vocabulary word.
Word To Know
Definition
Word To Know
Definition
Adjacent Angles
Angles that share a vertex and a Cross-Sections
When a 3-d figure is sliced
side
the shape you see on the
inside
Vertical Angles
Angles that are across from each Scalene Triangle
A triangle with NO
other measures are congruent
congruent sides
Acute Angle
A angle measuring less than 90
degrees
Isosceles Triangle
A triangle with 2 congruent
sides
Right Angle
An angle that measures exactly
90 degrees
Equilateral Triangle
A triangle in which all sides
are equal
Obtuse Angle
An angle that measures greater
than 90 degrees
Acute Triangle
A triangle in which all angles
are equal
Supplementary Angles
2 angles that measures that
equal 180 degrees
Complementary Angles
2 angles that measure 90
degrees
Use the picture below to answer the questions.
Name the pair of Vertical Angles.
_<APF__
__<CPB___
Name the two angles that are adjacent to <DPC
E
__<EPD_______
__<CPB___________
If <APF is 52⁰ what is the measure of<BPC? ___52_______
If <DPE is 36⁰, what is the measure of <APE? __54_______
If <APF is 52⁰, what is the measure of <FPB? __128_______
F
Complete the tables below by finding the complementary or supplementary angle for each given angle.
Given Angle
Complementary Angle
Given Angle
Supplementary Angle
62⁰
28
107⁰
73
14⁰
76
44⁰
136
76⁰
14
165⁰
15
29⁰
61
89⁰
91
8⁰
82
51⁰
129
Name each 3-D figure & Sketch the cross-section for each slice.
Figure
Cut by a horizontal
Cut by a Vertical
slice
Slice
Cut by a diagonal
Slice
_____CONE______
______CUBE_____
______CYCLINDER______
Rectangular PYRAMID
Find the missing angle for each triangle and classify the
triangle by its angles.
<1
<2
<3
Classification by angles:
Right, Acute or Obtuse
44⁰
68⁰
68
Acute
121⁰
7⁰
52
obtuse
56⁰
103⁰
21
obtuse
72⁰
18⁰
90
right
Name the Faces, Vertices and Edges
for each 3-D figure.
Shape
Faces
Vertices Edges
Rectangular 6
8
12
Prism
Triangular
4
5
6
pyramid
Hexagonal
8
12
18
Prism
Classify the triangle by the sides and the angles. Congruent sides and angles are indicated.
right isosceles
scalene obtuse
Find the value of x and find the missing angles.
60
120
58
3x
5x+20
2x-6
X=20
acute equilateral
acute scalene
X
x=32
X 32
115.2
3x
x-12
x= 38.4
26.4
right scalene