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given;
XZ= YZ so, angle X= angle Y= 3a+4( as angkes opposite to equal angkes are equal)
angle Z = 2a-4
By angle sum property:
(3a+4)+(3a+4)+(2a-4)=180
8a+4=180
8a=180-4
8a=176
a=176/8
a=22
so angleX and Y=3a+4
=3(22)+4
=66+4
=70
angle Z=2a-4
=2(22)-4
=44-4
=40
XZ= YZ so, angle X= angle Y= 3a+4( as angkes opposite to equal angkes are equal)
angle Z = 2a-4
By angle sum property:
(3a+4)+(3a+4)+(2a-4)=180
8a+4=180
8a=180-4
8a=176
a=176/8
a=22
so angleX and Y=3a+4
=3(22)+4
=66+4
=70
angle Z=2a-4
=2(22)-4
=44-4
=40
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