Cp3
fcpsnet
bb fcps 24-7 learning
fcps google apps
g
google classroom
classes
q
sampling ang
next
unit post test
which statement is not true?
o a.
all isosceles triangles are also equilateral triangles.
ob.
all equilateral triangles are also isosceles triangles.
c. obtuse triangles have one interior angle whose measure is more than 90°.
od.
acute triangles have no angles whose measures are greater than 90°.
is a or b

A is not true

Step-by-step explanation:

All equilateral are isosceles but not all isosceles are equilateral

Also please give brainliest 5 stars and thanks it really means a lot thx

answer: its the third option.

step-by-step explanation:

i just took the test.

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)