4.1 4.2 4.3 &4.4

4.5 &4.6

4.7

10 10 10 10 10

20 20 20 20 20

30 30 30 30 30

40 40 40 40 40

50 50 50 50 50

+Question 4.1 – 10

Identify the triangle that fits the given description.

obtuse

+Answer 4.1 – 10

JLM

+Question 4.1 - 20

Identify the triangle that fits the given description.

acute

+Answer 4.1 – 20

JKL

+Question 4.1 - 30

Identify the triangle that fits the given description.

equilateral

+Answer 4.1 – 30

JKL

+Question 4.1 - 40

Identify the triangle that fits the given description.

isosceles

+Answer 4.1 – 40

JLM

+Question 4.1 - 50

+Answer 4.1 – 50

acute

+Question 4.2 - 10

Find the value of x.

+Answer 4.2 – 10

33

+Question 4.2 - 20

Find the value of x.

+Answer 4.2 – 20

11

+Question 4.2 – 30

Find the mL1.

+Answer 4.2 – 30

137o

+Question 4.2 - 40

+Answer 4.2 – 40

82o, 82o

+Question 4.2 - 50

+Answer 4.2 – 50

59o, 90o

+Question 4.3 & 4.4- 10

Find the value of x.

+Answer 4.3 & 4.4 – 10

5

+Question 4.3 & 4.4 - 20

Find the length of the hypotenuse in the triangle shown. Use a calculator to round your answer to the nearest tenth.

+Answer 4.3 & 4.4 – 20

17.2

+Question 4.3 & 4.4- 30

Plot the points and find the distance between them.

+Answer 4.3 & 4.4 – 30

10

+Question 4.3 & 4.4 - 40

Plot the points and find the distance between them.

+Answer 4.3 & 4.4 – 40

about 4.5

+Question 4.3 & 4.4 - 50

Find the measure of all numbered angles in the figure below.

+Answer 4.3 & 4.4 – 50

mL1 = 118o

mL2 = 31o

mL3 = 46o

+Question 4.5 & 4.6 - 10

Is the triangle shown below acute, right, or obtuse?

+Answer 4.5 & 4.6 – 10

acute

+Question 4.5 & 4.6 - 20

Classify the triangle with the given side lengths as acute, right, or obtuse.

+Answer 4.5 & 4.6 – 20

obtuse

+Question 4.5 & 4.6 - 30

Classify the triangle with the given side lengths as acute, right, or obtuse.

+Answer 4.5 & 4.6 – 30

obtuse

+Question 4.5 & 4.6 - 40

D is the centroid of ABC. Find DC and DE if EC = 33.

+Answer 4.5 & 4.6 – 40

DC = 22DE = 11

+Question 4.5 & 4.6 - 50

ny

P is the centroid of JKL. Find KP and PM.

+Answer 4.5 & 4.6 – 50

KP = 12PM = 6

+Question 4.7 - 10

Use the diagram at the right to completethe statement.

+Answer 4.7 – 10

mLC

AB

AB < BC < CA

+Question 4.7 - 20

Name the smallest and largest angles of the triangle.

+Answer 4.7 – 20

smallest: LK

largest: LJ

+Question 4.7 - 30

Name the shortest and longest sides of the triangle.

+Answer 4.7 – 30

shortest: WX

longest: YW

+Question 4.7 - 40

Can the side lengths form a triangle? Explain.

+Answer 4.7 – 40

No, because 2 + 4 = 6.

Yes, because the sum of two sides is greater than the sum of the third in all three cases. A triangle can be formed.

No, because 5 + 11 < 17.

+Question 4.7 - 50

+Answer 4.7 – 50

Yes, because the sum of two sides is greater than the third side in all three cases. A triangle can be formed with these measurements.