Author: jaelonbrowngeometry

Formula for surface area of Prism is L + 2B, where L is lateral area which we can get by multiplying P and h( perimeter and height) and and B is the area of base. Surface area of cylinder is 2× pie× r× height + 2× pie× r^2, where r is radius and h is height of cylinder. Lateral area of pyramids is 1÷2 × P× l, where L is slant height and P is perimeter. The lateral area of cone is pie× r× l and surface area is pie× r× l+ pie× r^2), where r is radius and l is slant height. I feel the hardest to solve is prisms and easiest is pyramids.

Squares are a shape with 4 sides and 4 angels. All 4 sides are congruent. All 4 angels are congruent. Diagonals bisect each other. And the inside equals 180.

Trapezoids have 4 sides. Only the right and left sides are congruent. The top and bottom are parallel. The angels on the base are congruent. The diagonals are congruent.

1) a) NK would be half of 34 as diagonals bisect each other. b) JL would be twice of 11 because of same reason. c) We can find out KL using Pythagorean theorem as KNL forms 90. d) JKM would be 44 as diagonals bisect angles also. e) JML would be 88 as opposite are congruent and JKL formed 88. f) We can find out MLK by subtracting 88 from 180 as consecutive angles are supplementary. g) MNL would be 90 as diagonals in rhombus are perpendicular. h) KJL would be 46 as it is equal to MLJ which is 46.

2) a) All sides are same in square and ZY is equal to WZ which is 24. b) WY is 33.9 we can find out using Pythagorean theorem. c) RX would be half of 33.9 which is 16.95 as diagonals are equal and also bisect. d) WRZ is 90 as ZWR and WZR are 45. e) XYZ is 90 as all angles of square are 90. f) ZWY is 45 as it’s angle was bisected by diagonal.

3) Two angles are congruent so we will set them equal. We will find x and plug in the value and then find FCD.

Angles of a polygon can be interior and exterior. The formula is (n-2)*180. If it ask for exterior it’s whatever number they give you n(n-2)*180. And the exterior is always 360. Exterior is the one I struggled with the most.

Parallelograms is when everything’s congruent. It’s mostly going to be a quadrilateral. Even the angels on the inside are congruent. When you have to find X and plug it back in, to check just make sure it’s the some for the other.

. My spring break was kinda boring. I was preparing for a football camp. Monday I had workouts at 11. Tuesday we were on the field at 11. Wednesday I had a dentist appointment and workouts. Thursday I had 4 am to 7am workouts. Friday I had 4am workouts again. Saturday I left for Atlanta. When we got there we went to the mall and Olive Garden. The next day was the camp. After the camp was over we came home.

A arc is a part of the outside of a circle. A chord is a line segment within a circle. A arcs degree is measured by 360 degrees. You can use either one to find the other. Chords can be congruent to each other. Chord endpoints have arc lengths. And you can have congruent central angels and congruent arcs. And also I’m kinda confused. But here’s a picture of jalen Ellis 😂.

1)Draw the circle. Label what your given. To find kL use LM and MN 90-67=23. Next find LON. You have to use LK and ON. KN is 180. 180+23+23=226. Then find OM. Use MN and ON. 90+23=113. Then find KNL. 360-23=337. Then find NL. 226+23=203.

2) Draw circle. Then label. Find the arc length of PQS. QR and PT are congruent. 180-128=52. QP+QR+RS=PQS. 128+52+31=211. PQS=211

3) Draw the circle. Then label. Find the circumstance. The formula is C=dpie. So C=24pie. The circumstance is 75.398.

Central angles is made up of an arc between 2 point that make the angle. Circumstances measures the outside of the circle. Diameter is a chord that passes through the center of the circle. The formula for circumstance is c=piexdiameter or c=2piexradius. Diameter is made up of collinear radi. The arc’s length is the central angle of a circle .