Geometry

Q2. Adjacent angles on a straight line sum to 180°.

Q3. All angles of a rectangle are 90°.

Q4. The angle sum of a triangle is 180°.

Q5. A perpendicular from the centre to a chord bisects the chord.

Q6. A tangent to a circle touches it at exactly one point.

Q7. A line from the centre to the midpoint of a chord is perpendicular to the chord.

Q8. In a²+b²=c², c is the hypotenuse.

Q9. Similar triangles must always be congruent.

Q10. SSS stands for Side-Side-Side.