Answer:
Option A is correct
True, ΔABC and ΔDEF must be congruent.
Explanation:
LA theorem or Postulates states that given two right triangles, where one acute angle and a leg of one of the triangles are congruent to an angle and a leg of the other triangle, then the two triangles are congruent.
In ΔABC and ΔDEF
AB = DE [Leg] [Given in the figure]
[Given]
[Acute angle] [Given in the figure]
Then, by the LA theorem or Postulates;
therefore, ΔABC 
ΔDEF .
18- answer is 120
to find this:
first find the remaining angle in ABF
180-(55+40)=180-95=85
F has two angles. if F1 is 85 F2 is 85,too.(coterminal angles)
now you can find the interior angle of CDF
180-(35+85)=180-120=60
the you should find the exterior angle(exterior angle + interior angle =180)
180-60=120
x=120
20
x=48
y=82
ABC is parallel to EF
so to find x: 180-132=48
and for y:
180-((180-130)+48)=180-(50+48)=180-98=82
hope this helps
Answer:
-0.9, -0.85, -3/4, -1/2, 1/4, 0.55
Step-by-step explanation:
Answer:
I dont know
Step-by-step explanation:
SORRRYYY
Answer:
D) 84cm
Step-by-step explanation:
Square area = √(441cm²) = 21 cm
perimeter = 4*21 = 84 cm
