11 Questions Geometry: Classifying Angles and Lines – MATH Geometry grade 4. Draw points, lines, line segments, rays, angles (right, acute, obtuse ) and perpendicular and parallel lines. Identify these in two-dimensional figures. Based ... A(n) ______________ angle is smaller than a right angle. Acute Obtuse Right Straight A(n) ______________ angle is larger than a right angle, but smaller than a straight angle. Acute Obtuse Right Straight What type of angle is pictured? Acute Obtuse Right Straight … and 8 more awesome questions! Check them out by clicking “Play”.