# Circumferential angle

Vertices of the triangle ΔABC lay on the circle and are divided into arcs in the ratio 7:8:7.

Determine the size of the angles of the triangle ΔABC.

Determine the size of the angles of the triangle ΔABC.

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**geometry**- Thales' theorem
- inscribed angle theorem
**planimetrics**- circle
- triangle
**basic functions**- ratio
**numbers**- fractions

### Units of physical quantities:

### Grade of the word problem:

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