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Solution for Exercise 1 Page 55 Math 4 Workbook: Describing Right, Acute, Obtuse, and Straight Angles in Each Figure:
Step-by-Step Guide to Solve Exercise 1 Page 55 Math 5 Workbook
Solution Method:
- A right angle measures 90 degrees.
- An acute angle measures greater than 0 degrees and less than 90 degrees.
- A straight angle measures 180 degrees.
- An obtuse angle measures greater than 90 degrees and less than 180 degrees.
Answers:
a) + Angle A is a right angle.
a) + Angle A is a right angle.
+ At vertex B, all three angles are acute angles.
+ Angle C at vertex C is an acute angle.
+ Angles at vertex M, and edges MA, MB are acute angles.
+ Angle at vertex M, edges MB, MC is an obtuse angle
+ Angle at vertex M, edges MA, MC is a straight angle
b) The right angles are:
+ Angle at vertex A;
+ Angle at vertex B, edges BD, BC is a right angle
+ Angle at vertex D, edges DA, DC is a right angle
The acute angles are:
+ Angle at vertex B; edges BA, BD are acute angles
+ Angle at vertex C
+ Angle at vertex D, edges DB, DC are acute angles
+ Angle at vertex D, edges DA, DB are acute angles
+ Angle at vertex B, edges BA, BC is an obtuse angle
Additional Note:
- In question a: there is 1 right angle, 5 acute angles, 1 obtuse angle, and 1 straight angle
- In question b: there are 3 right angles, 4 acute angles, 1 obtuse angle, and 0 straight angles
The solutions to exercises on page 55 Math 4 consist of Z exercises. After solving exercise 1 on page 55 of the Math 4 workbook, students are encouraged to continue with hints and methods for solving Exercise 2 Page 55 Math 4 Workbook, Exercise 3 Page 55 Math 4 Workbook, and Exercise 4 Page 55 Math 4 Workbook, to improve their understanding of fourth-grade math.
