Angles
Muhtasari
Angles are the grammar of geometry: a handful of simple rules let you find an unknown angle in almost any figure, from a single straight line to a many-sided polygon. The skill is choosing the right rule and explaining your reasoning.
In this lesson you will calculate unknown angles using the properties of points, lines, triangles and quadrilaterals, the angles formed when a line crosses parallel lines, and the angle properties of polygons.
Malengo
- Calculate unknown angles and give simple explanations using the following geometrical properties: sum of angles at a point = 360° sum of angles at a point on a straight line = 180° vertically opposite angles are equal angle sum of a triangle = 180° and angle sum of a quadrilateral = 360°.
- Calculate unknown angles and give geometric explanations for angles formed within parallel lines: corresponding angles are equal alternate angles are equal co-interior angles sum to 180° (supplementary).
- Know and use angle properties of regular polygons.
- Know and use angle properties of regular and irregular polygons. (Extended only)
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Angles. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Two angles on a straight line are x and 110°. What is x? A. 70° B. 90° C. 110° D. 250° Answer: A
- Angles at a point add up to: A. 90° B. 180° C. 270° D. 360° Answer: D
- The interior angles of a triangle add up to: A. 90° B. 180° C. 270° D. 360° Answer: B
- Each exterior angle of a regular pentagon is: A. 60° B. 72° C. 108° D. 120° Answer: B
- When a transversal crosses parallel lines, alternate angles are: A. equal B. add to 90° C. add to 180° D. doubled Answer: A
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Angles? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
