The angles in triangle PQR is ∠P = 45°, ∠Q = 45° and ∠R = 90°.
Triangle
A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, equilateral, scalene and right angled triangle.
A right angled triangle is a triangle with one angle of 90 degrees.
PQR is a right angled triangle with ∠R = 90°, ∠Q = 45°, hence:
∠P + ∠Q + ∠R = 180° (sum of angles in a triangle)
∠P + 45 + 90 = 180
∠P = 45°
The angles in triangle PQR is ∠P = 45°, ∠Q = 45° and ∠R = 90°.
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