Question

1. skills review! use the grids to calculate the area of each shape below. round to the nearest whole square.
2. skills review! four important types of angles are shown to the right. use these to estimate the measure of each angle shown below to the nearest 10°:

Explanation:

Step1: Calculate area of shape a

Count full - squares and partial - squares. Assume each small square has an area of 1 square unit. Count full squares first and then combine partial squares to make whole ones as much as possible.

Step2: Calculate area of shape b

Similarly, count full and partial squares for shape b.

Step3: Estimate angle a

Compare the angle a with the reference angles (acute, right, obtuse, straight). It is an acute angle. Estimate its measure by eye - balling its proportion to a 90 - degree angle.

Step4: Estimate angle b

Angle b is a straight angle, so its measure is 180°.

Step5: Estimate angle c

It is an acute angle. Estimate its measure by comparing with the 90 - degree and 0 - degree reference.

Answer:

a. Area of shape a: [Estimated value after counting squares]. Area of shape b: [Estimated value after counting squares].
b. Angle a: [Estimated measure to nearest 10°]. Angle b: 180°. Angle c: [Estimated measure to nearest 10°].

(Note: Since the actual grid and angle details are not fully quantifiable from the provided image, the final numerical values need to be filled in after proper counting and estimation on the actual image.)