Mrs. Brown's Geometry Connection

Tuesday, May 21

Catherine Brown — Tue, 21 May 2013 19:12:02 +0000

We started lesson 10.6 on geometric probability today. Here is the Geo probability from class. The homework is p. 554, # 5 – 8, 11 – 22.

Tuesday, May 14

Catherine Brown — Tue, 14 May 2013 19:18:15 +0000

Section 10.4
There are 3 formulas that you need to be able to use.

Area of a triangle: A = 1/2 bh; Area of a trapezoid: A = 1/2h (b + c) where b and c are the measures of the bases.
Area of a rhombus: A = 1/2 product of the measures of the diagonals.

STudy guide 10,4

Monday, April 22

Catherine Brown — Mon, 22 Apr 2013 19:09:17 +0000

Here is a construction that we did in class today. We wanted to find the center of the circle: http://www.mathopenref.com/constcirclecenter.html Here are the notes from class today. 9.4-Day 2 – INK Homework: p. 471 #28-49, 56, 57, 64, 69; … Continue reading →

Friday, April 19

Catherine Brown — Fri, 19 Apr 2013 19:13:22 +0000

SEction 9.4 notes

An inscribed angle is an angle in the circle in which the vertex is a point on the circle and the sides of the angle are chords. The measure of an inscribed angle is one-half the measure of its intercepted arc.

Homework: p 470 #10-27

Wednesday, April 17

Catherine Brown — Wed, 17 Apr 2013 20:18:23 +0000

9.3 -Notebook file -Lesson

9.3 Study Guide/ Homework p. 462, #6-27

Monday, April 8

Catherine Brown — Mon, 08 Apr 2013 19:53:54 +0000

Decision Making: You will have to decide whether to use the Law of Sines or the Law of Cosines to solve the triangle. Check out the examples in this 8.6-ink. We also answered Questions 16 – 19 on page 434 in your book.. Homework: p. 434, #20, 22, 26, 28, 30, 34, 37, 39, 43. Ask me about # 26 in class tomorrow.

Tuesday, April 2

Catherine Brown — Tue, 02 Apr 2013 19:03:51 +0000

We learned how to use the Law of Sines to solve a triangle. To solve a triangle means to find the measure of each angle and to find the measure of each side. Here is a video to watch on the Law of Sines. Here is the link to see the Law of Sines – INK for today. Homework: p. 428 1-3, 4, 5, 6, 9 We also did STudy Guide 8.4 in class.

Thursday, March 28

Catherine Brown — Thu, 28 Mar 2013 19:12:36 +0000

Students took a quiz today on SOH CAH TOA – on how to use the calculator. Given the measures of the 3 sides of a right triangle, you should be able to write the sine, cosine, and tangent ratio of either one of the acute angles. We also applied the skill that we worked on yesterday. We worked on angles of elevation and angles of depreesion. Here is a Angles of Elevation and Angles of Depression that students completed in class. There is also another worksheet that is a review of SOH CAH TOA.

Wednesday, March 27

Catherine Brown — Wed, 27 Mar 2013 22:02:08 +0000

We had a quiz on 30-60-90 and 45-45-90 triangles. You should complete the worksheet with the extra practice – 5 problems. We went over the homework on trigonometric values….p. 415 1-4 and 17-37. Today we watch this video on solving right triangles using SOH CAH TOA.

Students completed the 8.3 worksheet and p. 416 # 38-49 were assigned for homework.

Wednesday, March 20

Catherine Brown — Wed, 20 Mar 2013 19:44:49 +0000

We are studying special right triangles. Draw the diagonal of a square. An isosceles right triangle is formed. This is a 45-45-90 triangle. Theorem 8.4 states that the measure of the hypotenuse of the 45-45-90 triangle is the square root of 2 times the measure of the leg. We completed 8 questions on a worksheet. There is a quiz tomorrow on Section 8.1. We will be studying 30-60-90 triangles tomorrow.8.2-INK