Question 1
Convex shapes have all interior angles less than 180° and bulge outward. Concave shapes have at least one interior angle greater than 180° (they have 'dents' or indentations).
Strategic basic drills ★ for grouping figures: 20 expert-level problems. Worksheet 29 of 30 - Focus: same transformation. Develop expertise in visual grouping, shape clusters, image sets with step-by-step solutions. Ideal for expert-level learners targeting challenging problems and time-bound practice.