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# The triangle POR is

### Question

The triangle POR is

### Options

A) an isosceles triange

B) an obtuse angle

C) a scalene triangle

D) an equilateral triangle

### Explanation:

< PRQ = 180$$^{\circ}$$ - 128$$^{\circ}$$ = 52$$^{\circ}$$ = < R

< P + < R + < Q = 180$$^{\circ}$$

76$$^{\circ}$$ + 52$$^{\circ}$$ + < Q = 180$$^{\circ}$$

128$$^{\circ}$$ + < Q = 180$$^{\circ}$$

< Q = 180$$^{\circ}$$ - 128$$^{\circ}$$

= 52$$^{\circ}$$

$$\bigtriangleup$$PQR is an isosceles

## Dicussion (1)

• < PRQ = 180$$^{\circ}$$ - 128$$^{\circ}$$ = 52$$^{\circ}$$ = < R

< P + < R + < Q = 180$$^{\circ}$$

76$$^{\circ}$$ + 52$$^{\circ}$$ + < Q = 180$$^{\circ}$$

128$$^{\circ}$$ + < Q = 180$$^{\circ}$$

< Q = 180$$^{\circ}$$ - 128$$^{\circ}$$

= 52$$^{\circ}$$

$$\bigtriangleup$$PQR is an isosceles