Angle in Triangles

Choose the CORRECT match.

• One of the angles is an obtuse angle

• All angles are acute angles

• One of the angles is a right angle

Choose the CORRECT match

• One of the angles is a right angle

• All angles are acute angles

• One of the angles is an obtuse angle

Choose the CORRECT match

• One of the angles is a right angle

• One of the angles is an obtuse angle

• All angles are acute angles

Find the value of x.

In the diagram, PQR is an isosceles triangle. PS and QR are parallel lines. Find the value of x.

In the diagram, PQS is a right-angled triangle. QRS is an isosceles triangle and RST is a straight line. Find the value of x.

In the diagram, QRS is a straight line. Find the values of x and y.

In the diagram, PQR, SQT and PTU are straight lines. Find the values of x and y.