11. It has a measure of exactly 90° . A. Acute angle B. Right angle C. Obtuse angle D. Supplementay
12. It has the measures greater than 0° but less than 90°. A. Acute angle B. Right angle C. Obtuse angle D. Supplementay
13. It has measures greater than 90° but less than 180°. A. Acute angle B. Right angle C. Obtuse angle D. Supplementay
14. These are two coplanar angles with common side and no common interior points. A. Adjacent angles B. Linear pairs C. Vertical angles D. Perpendicular
15. Lines that intersect to form a right angle are called. A. Adjacent angles B. Linear pairs C. Vertical angles D. Perpendicular