Question

A diagram is shown below. Which of the triangles MUST be isosceles?

Answer 1

SQV

Explanation:

Angle TQU can be worked out

90 + 46 = 136

180-136=44 ( angles in a triangle adds up to 180)

angle SQV = 44 (vertically opposite angles are equal)

adding angle SQV and QVS ; 44 + 68 = 112

angles in a triangle equal 180-112 =68

so the triangle SQV is an isosceles