CE is parallel to AD.
Determine the value of X given that ABC is isosceles and AB = BC?
CE is parallel to AD.
Determine the value of X given that ABC is isosceles and AB = BC?
CD is parallel to AB.
What type of triangle is ABC?
AB is parallel to CD.
Which triangle is isosceles?
ABCD rectangle.
What type of triangle is EFG?
ABC is an isosceles triangle.
DE is parallel to BC.
Angle A is equal to 3X plus 22.
Express the size of angle DEC.
CE is parallel to AD.
Determine the value of X given that ABC is isosceles and AB = BC?
Given that CE is parallel to AD, and AB equals CB
Observe angle C and notice that the alternate angles are equal to 2X
Observe angle A and notice that the alternate angles are equal to X-10
Proceed to mark this on the drawing as follows:
Notice that angle ACE which equals 2X is supplementary to angle DAC
Supplementary angles between parallel lines equal 180 degrees.
Therefore:
Let's move 2X to one side whilst maintaining the sign:
We can now create an equation in order to determine the value of angle CAB:
Observe triangle CAB. We can calculate angle ACB according to the law that the sum of angles in a triangle equals 180 degrees:
Let's simplify 3X:
Proceed to write the values that we calculated on the drawing:
Note that from the given information we know that triangle ABC is isosceles, meaning AB equals BC
Therefore the base angles are also equal, meaning:
Let's move terms accordingly whilst maintaining the sign:
Divide both sides by 3:
56.67
CD is parallel to AB.
What type of triangle is ABC?
Isosceles, AB = BC
AB is parallel to CD.
Which triangle is isosceles?
ABC, AB = BC
ABCD rectangle.
What type of triangle is EFG?
Isosceles EG=GF
ABC is an isosceles triangle.
DE is parallel to BC.
Angle A is equal to 3X plus 22.
Express the size of angle DEC.
AD is parallel to BC.
AE is an extension of side BA.
What type of triangle is ABC?
AB is parallel to DE.
AC = CB
Calculate the size of angle CDF.
AB and CD parallel
Given AC=AD
Find X
b ,a parallel.
BC=BD
?=X
Lines a and b are parallel.
The triangle ABC is isosceles.
What are the sizes of its angles?
AD is parallel to BC.
AE is an extension of side BA.
What type of triangle is ABC?
Isosceles.
AB is parallel to DE.
AC = CB
Calculate the size of angle CDF.
122.5
AB and CD parallel
Given AC=AD
Find X
b ,a parallel.
BC=BD
?=X
12
Lines a and b are parallel.
The triangle ABC is isosceles.
What are the sizes of its angles?
41, 41, 98
b,a parallel.
AB=AC
?=X
AB = BC
a, b, and c parallel to one another
Calculate the angles of the triangle ABC.
b,a parallel.
AB=AC
?=X
±6
AB = BC
a, b, and c parallel to one another
Calculate the angles of the triangle ABC.
50, 50, 80