Geometry Questions

our Turn 1 12 unit Use the Triangle Inequality Theorem to fell with the given lengths Fynl

ASSESSM Complete the following Show all your work Building a Truss The figure shows part of a common roof design using a very strong and stable triangular truss Points B C D F G I and Jare midpoints of AC AE CE GE HE AH and AI respectively 20 ft H B 4 ft F 14 ft E If AE 28 feet then how much lumber in feet would be needed to build the following truss Label both the diagram and the equation below in order to find the total necessary 3 points 20 14 28 AH HE AE DF DG CG CH IC IB Truss the frame of a roof JB

8 2 Homework HW B W 1 Which statement correctly describes the angle bisector construction shown below Complete problems 1 3 below for independent practice A B C OD Z When you are finished check the solutions with your teacher Ray ZX is parallel to angle WZY Ray ZX is perpendicular angle WZY Ray ZX bisects angle WZY Ray ZX bisects segment WY 3 LABC is bisected by BD For what value of x will DX DY be true 5x 4 D 19 2 Which statement correctly describes the angle bisector construction shown below R C S A Construction of QT to bisect segment SQR OB Midpoint between angle SQR C Midpoint between point S and R D Construction of QT to bisect angle SQR Optional Complete problems 2 5 8 9 13 15 from your textbook on separate lined paper book

3 Consider ZF such that cos F 37 a Which quadrants can ZF be in b Find the coordinates of a point on the terminal arm of the angle in each quadrant c If you are also told that the sine of the angle is negative in which quadrant is F other primary trigonometric ratios for ZF in the quadrant identified in part c

9 In the figure below what value of x will satisfy the midsegment theorem Lesson 8 4 1 point 136 G a RS II b If QP 16 then RS C If RS 9 then QP 2x 4 85 10 In the figure point R and S are the midpoints of QT and PT Fill in the following blanks Lesson 8 4 1 2 point 13 4x 65 Learning Goal from Lesson 8 1 and 8 2 I can construct the inscribed and circumscribed circles of a triangle I can prove properties of angles for a quadrilateral inscribed in a circle 11 ZK ZL ZM are perpendicular bisectors of AGHJ Select two options that are true Lesson 8 1 1 2 point Q AL R H A OB C D ZK 85 ZJ 85 KH 68 HJ 136 How I Did Circle one I got it I m still learning it 12 1

Your Turn 3 Find VW 4 Find YZ X 7x 17 4y 7 T 12y 14 W 8x 2 Z

point 2x 25 3x 2 b mzD 152 4x 2 7 Given the figure find the desired measurements Lesson 7 2 1 point a mzF 8 Draw your own triangle Then construct the centroid of the triangle Lesson 8 3 1 point 4x 1 5x 4

EVALUATE Independent Practice Lesson 8 4 Homework HW DE II 2DE 1 Fill in the following statements 14 3 Find the measurement of ED H 5 Solve for x W Complete problems 1 6 below for independent practice x 6 When you are finished check the solutions with your teacher X 2 Fill in the following statements R 4 QP 11 2RS 4 Find the measurement of NL 6 Solve for x M x 14 11 x 011 15 19 from your textbook on separate lined paper

12 In the figure YW bisects ZXWZ Fill in the following blanks Lesson 8 2 2 points W 2x 5 7x 20 N X Y Josh s solution a m XWY m b If XY 9 cm then ZY c Solve for x Once you solve for x take a look at the four student solutions below Only one of the student solutions shown below is correct Circle the student whose work is correct 7x 20 2x 5 180 5x25 180 5x 205 205 x 5 x 41 Aly s solution 7x 20 2x 5 5x 20 5 5x 15 15 x 5 N x 3 Kari s solution 7x 20 2x 5 90 9x 25 90 9x 115 115 x 9 x 12 78 Vivian s solution 7x 20 2x 5 9x 25 25 x 9 x 2 78

3 Determine whether a triangle can have the following sides with the given lengths Lesson 7 3 1 point a 5 mi 19 mi 15 mi b 4 ft 3 ft 10 ft 4 Write the angles of ADEF in order from smallest to largest Lesson 7 3 0 5 points Learning Goal from Lesson 7 1 7 2 8 3 and 8 4 I can prove the following theorems about triangles 2 25 E 1 105 D The measures of interior angles of a triangle sum to 180 The base angles of isosceles triangles are congruent The medians of a triangle meet at a point The segment joining midpoints of two sides of a triangle is parallel to the third side and half the length 5 Write the sides of AGHI in order from smallest to largest Lesson 7 3 0 5 points 6 Find the value of x in each of the given figures Lesson 7 1 and 7 2 2 points a How I Did Circle one I got it 59 61 H I m still learning it

n Your Turn Use the Triangle Inequality Theorem to tell whether a triangle can have the following sides with the given lengths Explain 1 12 units 4 units 17 units EXPLAIN 3 largest angle Read Explain 3 and complete Your Turn 1 2 adapted from Lesson 7 3 Show all your work In relation to each other the relative size of the side lengths of a triangle can be used to determine the relative size of the angles This means that if you are given the side lengths in order you can use them to order the angle by size largest side Ordering a Triangle s Angle Measures Given Its Side Lengths Side Angle Relationships in Triangles 2 24 cm 8 cm 30 cm Embr medium side medium angle In any triangle the larger angle is opposite the longer side AB AC BC SO mzC m2B mzA B Example For each triangle order its angle measures from least to greatest In the figure we see that the sides from shortest to longest are AB BC and AC The angles opposite these sides are LC LA and LB respectively So the order of angles from least to greatest is LC LA and LB shortest angle shortest side 2 4 15 3 A C 12

Learning Goal I can prove the following theorems about triangles The segment joining midpoints of two sides of a triangle is parallel to the third side and half the length X Q Lesson 8 4 Checkpoint Once you have completed the above problems and checked your solutions complete the Lesson Che below Complete the Lesson Reflection above by circling your current understanding of the Learning Goal 1 Given the figure below solve for x Then find the value of QP H x 3 x 3 3x 3 P 2 Given the figure below solve for x Then find the value of XV x 2 I V G P Starting Getting there

m Theorem Operty of Equality ty of Equality ms mzMJK 3x 16 D 7x F H E Lesson 8 NOREER O

Cool Down Make Your Own Invent measurements that would show triangle XYZ is similar to triangle NLM using the Side Angle Side Triangle Similarity Theorem Z N M

Find the area of the triangle having the indicated angle and sides Round your answer to one decimal place C 128 a 3 b 5

angle DBC angle ABE angle ABC A In the diagram which angles are vertical angles Choose 2 pairs angle EBD E B C angle DBC O O O O angle ABE O O O angle ABC O OOO angle EBD O O O

In the triangle below x 8 Use the Law of Cosines to solve the triangle Round your answers to two decimal places A B 12 cm O B 0 O 18 cm x cm C

Use the Law of Sines to solve the triangle Let a 12 mm Round your answers for b and c to two decimal places 0 C b A mm C mm b 350 C 55 a B 25

Use a graphing utility to complete the table and graph the functions in the same viewing window Use both the table and the graph as evidence that yyz Round your answers to four decimal places Y cos x sin x tan x y2 sec x X 4 3 Y Y2 Verify the identity algebraically 4 8 Y cos x sin x tan x cos x cos x 1 cos x cos x X 5 3 X 5 8 6 3 6 8 7 3

tan2x sec2x 9 Its only giving me one value when there is multiple in the solution set

Find the exact values of sin u 2 cos u 2 and tan u 2 using the half angle formulas cot u 3 u 3 2 sin u 2 cos u 2 tan u 2

What single theorem can take the given directly to the prove statement Given 41 and 42 are complementary 43 and 42 are complemtary Prove m41 m43 BI 3 D

5 2 Points Give the reason for the last statement in the proof Statement 1 41 and 42 are a linear pair 2 41 42 180 BAUMLIEK Enter your answer Reason 1 Given 2

10 Suppose that you decide to buy a car for 36 635 You saved 9000 for dow payment and you can get a 5 year car loan at 7 88 Use the formula PMT P 5 8 pts 1 1 nt

8 6 1 4 NA BM XY ARKKING B Z 6 4 2 2 4 O 6 2 4 Congruence Statement Reason 8 1 MG YZ GB ZX

Use the congruency statement to state corresponding congruent parts 16 AKIT AEAS 17 ALMO ANOM ZK ZS Z1 KT AS IK ZOMLE ZOMN ZN ON OL MO

In 18 20 Find the indicated information 18 A 32 X y Z 19 X y 54 20 7x 10 X 13x 8 Find the length of each side 3x

M Prove AOLN AMLN N bisects ZOLM LN bisects ZONM L O Statement Reason

A Given AAEF is isosceles D is midpoint AF Prove ZAED FED E D F Statement Reason

In 6 7 6 1 m find the value of x and the measure of all the angles drawings are not to scale 7 6x 15 15x 3 m 130 2x 10

In 10 11 If possible write a congruency statement and state the theorem SSS use to prove the triangles congruent 10 R A U Congruence Statement Reason T 11 E Reason D Congruence Statement C

14 Given ZP ZR PQ II SR Prove PQRS P Statement Reason

13 Given 20 ZQ P is the midpoint of OQ Prove AMOP ANQP M O P N Statement Reason

In I Identify the following angle pairs as Corresponding Angles Alternate Interior Angles Same Side Interior Angles Vertical Angles or Linear Pairs a 41 and 27 c 43 and 26 b 22 and 4 d 45 and 48 m 4 3 1 2 76 b

d A a C Y AB BC

B3 Find BD 8 6 D 12 X B

Solve for x 15 B A D 2x 4 18 8 C

B6 Solve for RQ R 10 48 T 3

Solve for x 21 15 35

ve for x B x 3 9 4 A 6 C

Solve for x B 35 15 21 XU x 1 C

Find mzSQR if m 2 13 S P 2 Q

A3 Find BD 9 9x1 6 12x 16 144 12x 12 12 12 X 12 9 A D 16 B

Find xif m22 1 28x and m2XVW 59x 1 V 2 1 W P

Find xif m22 4x 5 and m21 5x 2 Y X Z

B D 2 A 2x 2 5 C

Esperanza is the owner of an independent motel that has 40 rooms She finds that if she charges 30 per night all the rooms will be rented Thereafter for every 4 she raises the room rate 3 fewer rooms will be rented out 2 12 Write a function equation for the number of rooms rented as a function of the price of a room 5 13 Write an equation describing the income for the motel for one night as a function of the price of a room

A1 m SUT 34 Find m21 S P 2 T

X 1 Solve for x for 2 of the followi 370 63

Transversals Use your knowledge of angle relationships to find all the missing angle measurements A A A 30 E E 75 E 111 F B D B A D B A C D E C A C 143 E 99 64 E F B D B D B D