Polygons And Quadrilaterals Worksheet - Unit 9, Humble Independent School District Page 35
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3510. Two interior angles of an octagon are 126° and 146°. The other six angles are congruent. Which equation
could be used to find the measure of the six congruent angles.
A. 126 + 146 + x = 1080
B. 126 + 146 + 8x = 1440
C. 126 + 146 + 6x = 1080
D. 126 + 146 = 1440 – 6x
11. Given Isosceles Trapezoid PQRM with the coordinates
(-4,-3) (0,3) (4,3) and (8, -3), What is the
slope of the midsegment?
12. Tell whether each statement is sometimes, always, or never true.
a. A rectangle is a parallelogram___________
b. A parallelogram is a rhombus ___________
c. A square is a rhombus ___________
d. A square is a rectangle ___________
e. A rhombus is a square ___________
f. A rhombus is a rectangle ___________
g. A rectangle is a quadrilateral ___________
h. A rectangle is a square _________
13) Make sure you know all the properties of the various quadrilaterals we
have studied.
14) Give the best classification for the following figure (-5,2) (-5,6) (-1,6)
(2,1)
Use for #15 and 16
R
S
15) f m ∠ 1 = 54 ° , find m ∠ 2.
1
X
16) If XT = 2y – 3 and US = 32, find the value of ‘y’.
2
U
T
Rectangle RSTU
S
T
o
(2y – 20)
17) Find x
18) Find y
7x
2x + 15
19) TA =
20) Measure of angle A =
o
(3y + 10)
A
R
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