Name:_______________________________________________________
Per:___________________
Chapter 10 Review Worksheet
Remember the activities we did to remember the concepts we learned:
10.1: All angles INSIDE a triangle add up to be…..
10.1: Pasta activity
10.1: If you see an EXTERIOR angle, memorize the
formula…..
10.2: Congruent geometric figures, ≅
10.3: Pasta Activity to form triangles
180ᵒ
Smallest angle is opposite from smallest side
Biggest angle is opposite from biggest side
INSIDE + INSIDE = OUTSIDE
Match the angles that are the same and match the
sides that are the same in two figures
The two smaller sides have to add to be bigger than
the biggest side to form a triangle
Determine the unknown angle in each triangle
2. 80 + 66= 146
180- 146 = 34
1. 78 + 37 =
180- 115 = 65
90 + 32 = 122
180-122 = 58
3. 35+ 28 = 63 180- 63 = 117
60 + 60= 120
180-120 = 60
4. 35 + 110 = 145
180-145 = 35
List the side lengths from SHORTEST to LONGEST:
6. r,t,s
5. a,b,c
8. z,y,x
7. l,m,k
List the angles from SMALLEST to BIGGEST:
9. y,x,w
10. s,u,t
12. m,k,l
11. g,f,e
Solve for x:
13. 64 + 90= 154
154= x+8 154-8= x
146=x
14. 2x + 4 + 68 = 132
2x + 72 = 132 2x = 132- 72 2x = 60 x=30
3x+ 2 + 2x
+ 18 = 90
5x + 20 =
90
5x = 90-20
5x = 70
x=14
15. 2x + 6 + x = 126
3x + 6 = 126
3x= 126- 6 3x = 120 x = 40
16.
< L= 32*, < M = 62*, <N = 86*
17.
<G = 41*, <H = 39*, <I=100*
18.
<A = <E, <B= <F, <C= <G, <D=H , side AB= Side EF, Side BC= side FG, side CD = side GH, Side AD= side EH
19. Figure LMN is congruent to figure XYZ. Write the corresponding sides and corresponding angels that are
congruent.
<L= <X, <M= <Y, <N= <Z
side LM= side XY, side MN= side YZ, side LN= side XZ
Determine whether it is possible to form a triangle using the 3 given side lengths. Show your work!
20.
22.
6 in, 8.9 in, 13.7 in
21.
15 m, 4 m, 10.9 m
6+ 8.9 = 14.9
14.9 is greater than 13.7
4 + 10.9 = 14.9
14.9 < 15
Yes it will make a triangle
Not possible
12 m, 5 m, 18.9 m
12 + 5 = 17
17 < 18.9
Not possible
23.
7 in, 8.7 in, 15.4 in
7 + 8.7 = 15.7
15.7 is greater than 15.4
Yes it will form a triangle