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Katarina [22]
3 years ago
6

If m X=49, y=41 X=90, y= 49 X=41, y =49 X=90, y=41

Mathematics
1 answer:
zysi [14]3 years ago
7 0

Answer:

x=90 degrees and y=41 degrees.

Step-by-step explanation:

In the diagram

AB=AC\\$Therefore \triangle ABC$ is an isosceles triangle

m\angle C=49^\circ

Since ABC is Isosceles

m\angle B=m\angle C=49^\circ $ (Base angles of an Isosceles Triangle)

m\angle A+m\angle B+m\angle C=180^\circ $ (Sum of angles in a Triangle)\\m\angle A+49^\circ+49^\circ=180^\circ\\m\angle A=180^\circ-(49^\circ+49^\circ)\\m\angle A=82^\circ

m\angle x=90^\circ $(perpendicular bisector of the base of an isosceles triangle)

m\angle y=m\angle A \div 2 $ (perpendicular bisector of the angle at A)\\m\angle y=82 \div 2\\m\angle y=41^\circ

Therefore:

x=90 degrees and y=41 degrees.

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——————————

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