10. What is the least number of acute angles a triangle can have?

11. Can a triangle have a right angle and an obtuse angle? Explain your answer.

12. Kaya said that a rectangle can be a rhombus. Explain whether Kaya's statement is correct.

13. Andy said that a quadrilateral can have exactly 3 right angles. Explain whether Andy's

statement is correct.

10) 3

11) no

12) kayla's statement is incorrect because the diagonals of a rectangle do not intersect each other at 90 degree like a rhombus.

13) Andy's statement is incorrect because

Quadrilaterals have 4 sides and 4angles. The exterior angles of any convex polygon add up to 360 degrees (4 right angles). If an interior angle is a right angle then the corresponding exterior angle must also be a right angle