Triangle CDA is the image of triangle ABC after a 180° rotation around the midpoint of segment AC. Triangle ECB is the image of
triangle ABC after a 180° rotation around the midpoint of segment BC.
Part A: Explain why ABCD and ABEC are parallelograms.
Part B: Identify at least two pairs of congruent angles in the figure and explain how you know they are congruent.
Part C: Explain how to use what you know about the sum of the angles in a triangle to figure out the sum of the angles of quadrilateral ABED.
1 answer:
Answer:equal and parallel opposite sides
Step-by-step explanation:
equal sides
parallel opposite sides
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1).
a=bh
=(13)(9)
=117in^2
2).
A=1/2h(b1+b2)
=1/2(14)(15+9)
=168cm^2
3).
A=1/2d1d2
=1/2(18)(11)
=99in^2
Step-by-step explanation:
a. true
property: identity
b. false
property: communitive
c. true
associative
d. false
property: multiplication property of zero
Answer: 7500
Step-by-step explanation:
multiply 150 by 50
Answer:
Option D. -1 and 0
Step-by-step explanation:
Answer:
X=11º
Y=26º
Step-by-step explanation:
77=7x 11=x
180=77+77+y 26=y
