Download Hw # 2 - Newcomers High School

Name_____________________________________________________
MGS21
Mrs. Montoya
Hw # 2: Triangles
Match the letter of the figure to the correct vocabulary word in Exercises 1–4.
1. right triangle
__________
2. obtuse triangle
__________
3. acute triangle
__________
4. equiangular triangle
__________
Classify each triangle by its angle measures as acute, equiangular, right, or
obtuse. (Note: Give two classifications for Exercise 7.)
5.
6.
________________________
7.
________________________
________________________
For Exercises 8–10, fill in the blanks to complete each definition.
8. An isosceles triangle has ____________________ congruent sides.
9. An ____________________ triangle has three congruent sides.
10. A ____________________ triangle has no congruent sides.
Classify each triangle by its side lengths as equilateral, isosceles, or scalene.
(Note: Give two classifications in Exercise 13.)
11.
12.
________________________
13.
________________________
________________________
Find the side lengths of the triangle.
14. AB  ____________________ AC  ___________________
BC  ______________
15. The New York City subway is known for its crowded cars. If all the seats
in a car are taken, passengers must stand and steady themselves with
railings or handholds. The last subway cars designed with steel hand
straps were the “Redbirds” made in the late 1950s and early 1960s.
The figure gives the dimensions of one of these triangular hand straps.
How many hand straps could have been made from 99 inches of steel?
______________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
Holt McDougal Geometry
Name _______________________________________ Date __________________ Class __________________
Use the figure for Exercises 16–18. Name all the angles that fit the definition of
each vocabulary word.
16. exterior angle
__________________
17. remote interior angles to 6
__________________
18. interior angle
__________________
For Exercises 4–7, fill in the blanks to complete each theorem or corollary.
19. The measure of each angle of an _______________ triangle is 608.
20. The sum of the angle measures of a triangle is _______________.
21.The acute angles of a _______________ triangle are complementary.
22. The measure of an _______________ of a triangle is equal to the sum
of the measures of its remote interior angles.
Find the measure of each angle.
23. mB ___________________
24. mF __________________
25. mG ___________________
26. mL ___________________
27. mP ___________________
28. mVWY _______________
29. When a person’s joint is injured, the person often goes through
rehabilitation under the supervision of a doctor or physical
therapist to make sure the joint heals well. Rehabilitation
involves stretching and exercises. The figure shows a leg
bending at the knee during a rehabilitation session. Use
what you know about triangles to find the angle measure that
the knee is bent from the horizontal (fully extended) position
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
Holt McDougal Geometry
Name _______________________________________ Date __________________ Class __________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
Holt McDougal Geometry
Name _______________________________________ Date __________________ Class __________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
Holt McDougal Geometry