Angles Around A Point And On Parallel Lines
Akopọ
Angles are everywhere a line turns or two lines cross, and a small set of facts lets you find an unknown angle without measuring it. Angles at a point, angles on a straight line, vertically opposite angles and the angles made when a line cuts a pair of parallel lines all follow simple, reliable rules.
In this lesson you will use these rules to calculate unknown angles, and just as importantly to justify each step with the correct reason. That habit of giving a reason is exactly what earns full marks in a geometry question.
Awọn Afojusun
- Calculate unknown angles using angles at a point, on a straight line, vertically opposite angles, and angles formed by parallel lines and a transversal.
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Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Angles Around A Point And On Parallel Lines. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Angles at a point add up to: A. 90 degrees B. 180 degrees C. 270 degrees D. 360 degrees Answer: D
- Two angles on a straight line are 70 and x. Find x. A. 20 B. 70 C. 110 D. 290 Answer: C
- When two straight lines cross, the angles opposite each other are: A. supplementary B. equal C. complementary D. always 90 Answer: B
- Co-interior angles between parallel lines add up to: A. 90 degrees B. 180 degrees C. 360 degrees D. they are equal Answer: B
- A transversal crosses parallel lines giving a corresponding angle of 65 degrees. The matching angle is: A. 25 B. 65 C. 115 D. 130 Answer: B
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Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Angles Around A Point And On Parallel Lines? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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